68 Sentences With "icefalls" | Random Sentence Generator

Stern: There are evidence for icefalls and floes and glaciers.

Atop K2's near-vertical slopes, glacial icefalls dislodge car-size hunks of ice.

Black Icefalls () is a line of icefalls at the south margin of Chapman Snowfield, Churchill Mountains. The icefalls extend southwest from Mount Massam to Vance Bluff, and were named in honor of A. W. Black, a member of the 1959 Cape Hallett winter-over team, working as a technician on the geomagnetic project.

Soza Icefalls () is a line of icefalls nearly high at the southern margin of Chapman Snowfield in the Churchill Mountains. The icefalls extend southwest for from Mount Massam, ending near the head of Starshot Glacier. They were named after Ezekiel R. Soza, a U.S. Geological Survey topographic engineer with the Topo North - Topo South survey expedition in these mountains, 1961–62.

The Emerald Icefalls () are icefalls along the north side of Ezcurra Inlet, Admiralty Bay, King George Island, in the South Shetland Islands. They were so named by the Polish Antarctic Expedition, 1980, from the color of the serac.

Shackleton Icefalls () is extensive icefalls of the upper Beardmore Glacier, southward of Mount Darwin and Mount Mills. Named by the British Antarctic Expedition (1910–13) for Sir Ernest Shackleton, leader of the British Antarctic Expedition (1907–09), who first penetrated this region.

This peak is still an unclimbed peak due to sharp cornices and icefalls on the ridge.

Scuppers Icefalls () is a prominent line of icefalls, 5 nautical miles (9 km) long and nearly 400 m high, between Mount Razorback and Mount Nespelen in Convoy Range, Victoria Land. The icefalls are the main outflow draining from Flight Deck Neve into Benson Glacier. One of a group of nautical names in Convoy Range, this descriptive name is derived from the drainage of the feature, suggestive of stormwater on a ship's deck draining through scuppers along the rail. Named by a New Zealand Antarctic Research Program (NZARP) field party, 1989–90.

Barnes Icefalls () are the icefalls along Washington Escarpment between Mount Dover and Bennett Spires in the Neptune Range, Pensacola Mountains. They were mapped by the United States Geological Survey from surveys and from U.S. Navy air photos, 1956-66, and named by the Advisory Committee on Antarctic Names for James C. Barnes, meteorologist and station scientific leader at Ellsworth Station, winter 1962.

Dickson Icefalls () are north-draining icefalls of moderate slope at an elevation of , located between Mount Moulton and Mount Bursey in the Flood Range of Marie Byrd Land. They were mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1959–65, and were named by the Advisory Committee on Antarctic Names for Donald T. Dickson, a United States Antarctic Research Program glaciologist with the Byrd Station Traverse of 1962–63.

Skelton Icefalls () is a prominent icefall extending in an arc some 15 nautical miles (28 km) from Portal Mountain to the north end of Warren Range, in Victoria Land. Named by Advisory Committee on Antarctic Names (US-ACAN) in 1964 in association with Skelton Neve and Skelton Glacier. South of the main flow is Icefall Nunatak, a prominent ice-free nunatak, high. It was named by the US-ACAN in 1964 for its proximity to the Skelton Icefalls.

Wright Upper Glacier () is an ice apron at the upper west end of Wright Valley in Asgard Range, Antarctica. It is formed by a glacier flowing east from the inland ice plateau. Named by the Victoria University of Wellington Antarctic Expedition (VUWAE) (1958–59) for C.S. Wright, a member of the British Antarctic Expedition (1910–13), after whom the "Wright Glacier" (adjusted to Wright Lower Glacier by the VUWAE) was named. Two massive icefalls descend from the Wright Upper Glacier into the Wright Valley, the wide and tall Airdevronsix Icefalls and the equally tall wide Warren Icefalls, which was named by the Advisory Committee on Antarctic Names (US-ACAN) in 2004 for Alden Warren, a longtime photographer (scientific and technical) with the United States Geological Survey, involved in documenting maps of Antarctica.

Airdevronsix Icefalls () is a line of icefalls at the head of Wright Upper Glacier, in Victoria Land, Antarctica. Named by U.S. Navy Operation Deepfreeze (1956-57) for U.S. Navy Air Development Squadron Six, which had been formed to provide air support for the Deep Freeze operations and which had also carried out many important Antarctic exploratory flights. This icefall belongs to world's most impressive natural landmarks and is approximately wide and tall. It has formed on Jurassic dolerite sill, which has intruded in Devonian - Triassic sandstone.

Angino Buttress is a prominent buttress-type mountain near the center of the Skelton Icefalls in Victoria Land, Antarctica. It was named by the Advisory Committee on Antarctic Names in 1964 for Ernest E. Angino, geologist at McMurdo Station, 1959-60\.

Small valley glaciers form icefalls where they meet the trunk glacier. The sidewalls vary from very steep to precipitous. The glacier has carved striations on the surrounding country rocks. Moving ice has formed depressions, which serve as basins for numerous glacial lakes.

S Glacier is in North Cascades National Park in the U.S. state of Washington, on the east slopes of Hurry-up Peak. S Glacier is disconnected in several spots. The uppermost sections terminate in icefalls, while the lower section ends in talus. Total descent of the glacier is from .

Adams Glacier cascades down the northwest face of Mount Adams in a series of icefalls, viewed from Takhlakh Lake. Trail along the Takh Takh Lava Flow, accessed from trails originating at Takhlakh Lake Campground The Midway High Lakes Area lies below the volcanic peak of Mount Adams, and Adams Glacier cascading from the summit in a series of icefalls. It is the second largest glacier in the State of Washington, after Carbon Glacier on Mount Rainier. The area is characterized by several volcanic features in addition to Mount Adams, such as the Takh Takh Lava Flow, the Muddy Fork Lava Flows, and Potato Hill, a small 200 foot tall cinder cone below the Muddy Fork Lava Flows.

Apart from the landforms left behind by glaciers, glaciers themselves may be striking features of the terrain, particularly in the polar regions of Earth. Notable examples include valley glaciers where glacial flow is restricted by the valley walls, crevasses in the upper section of glacial ice, and icefalls—the ice equivalent of waterfalls.

The summit can be easily reached with a short diversion from the Alta Via dei Monti Liguri, a long-distance trail from Ventimiglia (province of Imperia) to Bolano (province of La Spezia) which flancks the mountain on its Ligurian Sea side. In wintertime the northern slopes of Monte della Guardia offer some interesting icefalls.

La Grave is also a location for ice climbing. The valley receives little sun in winter and icefalls form on the valley sides. Climbing routes range from under 100 to over 300 metres long and are climbed in a number of pitches. Routes range from easy La Gorge II/3 to hard Diabolobite II/5+.

Baxter Glacier () is a glacier nurtured by icefalls from Flight Deck Neve, flowing northeast between Flagship Mountain and Mount Davidson to enter Fry Glacier, in Convoy Range, Victoria Land. It was named by a 1976–77 Victoria University of Wellington Antarctic Expedition (VUWAE) field party after James K. Baxter, New Zealand poet and social critic.

Mount Holdgate () is a prominent mountain, high, with steep icefalls and rock buttresses which provides a clear landmark at the southeast end of Cook Island in the South Sandwich Islands. It was named by the UK Antarctic Place-Names Committee for Martin W. Holdgate, organizer and senior scientist of the survey of the South Sandwich Islands from in 1964.

The Ārai Terraces are a series of crevassed terraces and icefalls close southward of Fazekas Hills, near the head of Lowery Glacier. They were so named by the New Zealand Geological Survey Antarctic Expedition (1959–60) because they are a natural barrier to sledge travel which the party was unable to traverse, ārai being the Māori term for barrier.

Garden Glacier is in Wenatchee and Mount Baker-Snoqualmie National Forests in the U.S. state of Washington. Garden Glacier is in two sections, located on the south and east slopes of Sinister Peak. The glacier is along the original approach route for the first ascent of Sinister Peak in 1939. Garden Glacier extends from and end in icefalls and barren rocks.

Perhaps the most conspicuous consequence of glacier flow, icefalls occur where the glacier bed steepens and/or narrows. Most glacier ice flows at speeds of a few hundred metres per year or less. However, the flow of ice in an icefall may be measured in kilometres per year. Such rapid flow cannot be accommodated by plastic deformation of the ice.

Pitkevitch Glacier () is a glacier, 20 nautical miles (37 km) long, flowing north from the Admiralty Mountains along the west side of DuBridge Range. The glacier reaches the sea just east of Atkinson Cliffs, where it forms Anderson Icefalls. A portion of the terminus merges northwestward with Fendley Glacier. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1960–63.

Mount Fleming () is a mountain, over high, standing at the southwest side of Airdevronsix Icefalls and Wright Upper Glacier, in Victoria Land, Antarctica. It was named in 1957 by the New Zealand Northern Survey Party of the Commonwealth Trans-Antarctic Expedition (1956–58) for Dr. C.A. Fleming, Senior Paleontologist of the New Zealand Geological Survey, and Chairman of the Royal Society's Antarctic Research Committee.

Flight Deck Névé () is an elevated and unusually flat glacier névé, about , between Flagship Mountain and Mount Razorback in the Convoy Range of Victoria Land, Antarctica. The feature is the primary source of ice to the east-flowing Benson Glacier at Scuppers Icefalls. It is one of a group of nautical names in the Convoy Range applied by the New Zealand Geographic Board in 1994.

Gateway Nunatak () is a prominent nunatak near the head of Mackay Glacier, standing west of Mount Gran, in Victoria Land, Antarctica. It was surveyed in 1957 by the New Zealand Northern Survey Party of the Commonwealth Trans- Antarctic Expedition (1956–58), and so named by them because it marks the most obvious gateway through the upper icefalls for parties traveling west up the Mackay Glacier.

Ferrell Buttress () is a distinctive rock buttress, about high, near the east end of Cranfield Icefalls, on the south side and near the terminus of Darwin Glacier in Antarctica. It was named by the Advisory Committee on Antarctic Names after Lieutenant Commander W.F. Ferrell, U.S. Navy, a pilot with the VXE-6 detachment at Darwin Glacier Field Camp in the 1978–79 field season.

Minnehaha Icefalls () is a small, heavily crevassed icefall descending the steep western slopes of Mount England and forming a southern tributary to New Glacier, close west of its terminus at Granite Harbour, Victoria Land, Antarctica. It was charted and named by a party of the British Antarctic Expedition (1910–13) led by Thomas Griffith Taylor. The name, after Minnehaha, was suggested by Frank Debenham.

Heaps Rock () is a rock exposure above Bursey Icefalls and west-northwest of Hutt Peak on the Mount Bursey massif, in Marie Byrd Land, Antarctica. It was mapped by the United States Geological Survey from ground surveys and U.S. Navy air photos, 1959–66, and was named by the Advisory Committee on Antarctic Names for Kenneth L. Heaps, a meteorologist at South Pole Station in 1970.

Tech Crags () is a narrow broken ridge 2 nautical miles (3.7 km) south of Williams Cliff on Ross Island. The feature rises to c.1000 m and marks a declivity along the north flank of broad Turks Head Ridge, from which ice moves to Pukaru Icefalls. Named by Advisory Committee on Antarctic Names (US- ACAN) (2000) after the New Mexico Institute of Mining and Technology, known as New Mexico Tech.

Riptide Cirque () is a glacial cirque on the south wall of Eastwind Ridge immediately west of Mount Naab, in the Convoy Range, Victoria Land. Icefalls at the head provide the main ice flow into the Towle Glacier. One of the nautical names in Convoy Range. The name was applied by a 1989-90 New Zealand Antarctic Research Program (NZARP) field party to describe the fastest flowing tributary to Towle Glacier.

This route is straightforward, but made difficult by icefalls, mud slips, and easily started rock avalanches. Some of the caves around Adams were subject to commercial ventures. In the 1860s, ice was gathered from the Ice Cave and shipped to Portland and The Dalles in years of short supply elsewhere. Oddly, a "claim" to the cave using mining laws was used in order to gain exclusive access to the ice.

Pound, pp. 101–107 The journey back was difficult, as until this point the sledges had been handled by four-man teams, and the reduction to three slowed them considerably. In an attempt to save several days, the party descended from the plateau by sledging several hundred feet down the deeply crevassed Shackleton Icefalls onto the Beardmore Glacier, rather than take the slower and safer climb down the mountainside.

Baldwin Glacier () is a broad glacier, flowing generally eastward from a large icefalls at the escarpment west of Mount Rosenwald and entering Shackleton Glacier south of Mount Heekin. It was discovered and photographed by U.S. Navy Operation Highjump (1946-47) on the flights of February 16, 1947, and named by the Advisory Committee on Antarctic Names for Sergeant George E. Baldwin, United States Marine Corps, photographer on Flight 8A.

The younger rock strata in the southwest of Iceland and the central highlands are only about 700,000 years old. The geological history of the earth is divided into ice ages, based on temperature and climate. The last glacial period, commonly referred to as The Ice Age is thought to have begun about 110,000 years ago and ended about 10,000 years ago. While covered in ice, Iceland's icefalls, fjords and valleys were formed.

Icefall Nunatak () is a nunatak north of Mount Watt in the Barker Range of Victoria Land, Antarctica. The nunatak was visited in 1981–82 by Bradley Field, a geologist with the New Zealand Geological Survey, who suggested the name from the impressive icefalls that drop off at either side of the feature. The topographical feature lies situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.

Challenger Glacier is in North Cascades National Park in the U.S. state of Washington and is on the north slopes of Mount Challenger. Challenger Glacier descends from . Over wide, Challenger Glacier descends along a wide terminus with heavy crevassing and numerous icefalls, with a tongue of the glacier in the north descending to a proglacial lake. The ascent up Challenger Glacier is one of the most common routes to the summit of Mount Challenger.

A hanging glacier on Mount Shuksan. A hanging glacier originates high on the wall of a glacial valley and descends only part of the way to the surface of the main glacier and abruptly stops, typically at a cliff. Avalanching and icefalls are the mechanisms for ice and snow transfer to the valley floor below. Rock and icefall from a hanging glacier was responsible for triggering the Kolka-Karmadon rock ice slide in 2002, that killed 125 people.

Scheuermann Spur () is a broad ice-covered limb of the Darwin Mountains between the head of the Hatherton Glacier and the west end of Prebble Icefalls. The feature has a relatively flat summit area (about 1600 m) that tapers southward to a narrow snout. A rock cliff marks the west side facing Hatherton Glacier. Named after Mike Scheuermann, Air Projects Specialist, Office of Polar Programs, National Science Foundation (NSF), 1995–2001; former Navy liaison to OPP from U.S. Navy.

The dam helps protect the Bagnes and Rhône river valleys from glacial lake outburst floods such as ones that occurred in 1595 and 1818. During the 1960s and 1970s, Giétro Glacier adjacent to Lac de Mauvoisin threatened to produce icefalls, which could have overtopped the dam. Giétro has retreated since 1980, eliminating the threat of such an event. The dam also traps about of sediment each year, helping to extend the life of downstream hydroelectric plants.

Mount Jarvis is an eroded shield volcano in the Wrangell Mountains of eastern Alaska. It is located in Wrangell-Saint Elias National Park about east of the summit of Mount Wrangell. The mountain sits at the northeastern edge of the massive ice-covered shield of Wrangell, rising nearly above it in a spectacular series of cliffs and icefalls. When seen from above, Mount Jarvis is distinctly dumbbell-shaped, with two prominent peaks connected by a narrower ridge.

It is also fed by an arm of the Lyman Glacier as it flows down from the summit ice cap. The Wilson Glacier terminates at where it is the source of Little Muddy Creek, another tributary of the Klickitat. The north side is distinguished by two major glaciers, the Lyman and Lava Glaciers. Like the Adams Glacier, the Lyman Glacier is characterized by deep crevasses and many icefalls as it cascades down from the summit ice cap.

Anderson Icefalls () is an icefall at the lower end of Pitkevitch Glacier terminating in a cliff face high, located just southeast of Atkinson Cliffs along the north coast of Victoria Land. Charted in 1911 by Commander Victor Campbell's Northern Party of the British Antarctic Expedition, 1910-13\. Named by the British Antarctic Expedition probably for Mr. Anderson of the firm, John Anderson and Sons, Engineers, who owned Lyttelton Foundry, and took great interest in the expedition.

Gaussiran Glacier is a glacier in the eastern part of the Britannia Range, Antarctica. It drains north from the saddle with Merrick Glacier to a juncture with Darwin Glacier between the Cranfield Icefalls and the Nebraska Peaks. It is separated from Alley Glacier by a series of large rock buttresses, including Robertson Buttress. It was named by the Advisory Committee on Antarctic Names after Lieutenant C.D. Gaussiran, U.S. Navy, a pilot with the VXE-6 detachment at Darwin Glacier Field Camp, 1978–79.

Jacka Glacier () is a long glacier which flows northeast from Hayter Peak and terminates in icefalls opposite Vanhoffen Bluff on the north side of Heard Island in the southern Indian Ocean. The glacier appears to be roughly charted on an 1860 sketch map compiled by Captain H.C. Chester, an American sealer operating in the area during this period. It was surveyed in 1948 by the Australian National Antarctic Research Expeditions, and named by them for Fred J. Jacka, an expedition physicist.

The bust of Frank Worsley in Akaroa A bust of Frank Worsley stands in his home town of Akaroa, New Zealand. The sculpture was created by artist Stephen Gleeson of Christchurch and unveiled in 2004. The town's museum also displays the ensign from Worsley's former command, the PC.61. Several geographical features are named for Worsley, including Mount Worsley on South Georgia, Cape Worsley in the British Antarctic Territory, the Worsley Icefalls in the Ross Dependency and Worsley Harbour at Spitzbergen.

Mount Metschel () is a prominent ice-free mountain in Antarctica, high, standing southeast of Angino Buttress and the Skelton Icefalls. It was mapped by the United States Geological Survey from ground surveys and Navy air photos, and was named by the Advisory Committee on Antarctic Names for Commander John J. Metschel, U.S. Navy, commander of the icebreaker in the Antarctic and the Arctic in 1962 and 1963. Metschel was killed in the Arctic, October 15, 1963, while engaged in ice reconnaissance in a helicopter from his ship.

Deep crevasses and icefalls on Adams Glacier The Pinnacle, White Salmon, and Avalanche glaciers on the west side of the mountain are less thick and voluminous, and are generally patchy in appearance. They all originate from glacial cirques below the actual summit. Although the White Salmon Glacier does not originate from the summit ice cap, it does begin very high on the mountain at about . In the early 1900s, a portion of it descended from the summit ice cap, but volume loss has separated it.

The basin inside the fjord is fairly wide and regular, with steep mountains on both sides. At its inner end there is the terminus of an active glacier flowing from the massive Karpinsky Glacier in the northwest. Other active glaciers stemming from the University Glacier in the southwest flow into the western shore of the fjord forming icefalls in certain areas. The outpouring of the glaciers at the head results in a substantial amount of ice streaming out of the fjord the whole year round.

Icefalls and extruded lava on the Kingcome Glacier Currently Silverthrone is not monitored closely enough by the Geological Survey of Canada to ascertain how active the volcano's magma system is. The existing network of seismographs has been established to monitor tectonic earthquakes and is too far away to provide a good indication of what is happening beneath the caldera. It may sense an increase in activity if the volcano becomes very restless, but this may only provide a warning for a large eruption. It might detect activity only after the volcano has started erupting.

Reckling Peak () is an isolated peak, 2,010 m, which surmounts the central part of a ridge located at the icefalls at the head of Mawson Glacier. Mapped by United States Geological Survey (USGS) from ground surveys and Navy air photos. Named by Advisory Committee on Antarctic Names (US-ACAN) in 1964 for Lieutenant Commander Darold L. Reckling, pilot with U.S. Navy Squadron VX-6, 1961. Reckling Moraine is located 8 nautical miles (15 km) east of the peak, and is connected by a long narrow patch of bare ice.

Vance Bluff () is a small ice-covered eminence near the polar plateau, 10 nautical miles (18 km) north of Laird Plateau. Its flat summit merges with the ice sheet to the north and west, but there is a steep cliff along the south side. Black Icefalls run northeast from Vance Bluff to Mount Massam. It was named by the Advisory Committee on Antarctic Names (US-ACAN) for the USS Vance, an ocean station ship in support of aircraft flights between New Zealand and McMurdo Sound during U.S. Navy Operation Deepfreeze 1962.

Most of the largest remaining glaciers (including the Adams, Klickitat, Lyman, and White Salmon) originate from Adams' summit ice cap. On the northwest face of the mountain, Adams Glacier cascades down a steep channel in a series of icefalls before spreading out and terminating at around the elevation, where it becomes the source of the Lewis River and Adams Creek, a tributary of the Cispus River. Its eastern lobe ends at a small glacial tarn, Equestria Lake. In the Cascades, Adams Glacier is second in size only to Carbon Glacier on Mount Rainier.

Adams Glacier cascades down the northwest face of Mount Adams in a series of icefalls. The small, 15.8 acre lake is popular for fishing, camping, and photography, while offering outstanding views of Mount Adams and its sheer, glaciated northwest face as well as Adams Glacier, the second largest glacier in the contiguous United States. Adjacent Olallie Lake Campground is administered by the Cowlitz Ranger District of the Gifford Pinchot National Forest. The small, but semi-popular five site campground features a boat ramp allowing non-motorized boating and canoeing.

Mount Moulton is formed by a complex of glaciated but largely uneroded shield volcanoes with ice-filled calderas, each of which is about wide. The calderas are apart. Additionally the Prahl Crags – remnants of the former caldera rim – are found south, Gawne Nunatak west, Edwards Spur northeast and the Moulton Icefalls on the northern side of the mountain. The total volume of the complex is about , comparable to that of Mount Shasta in the Cascade Range, and is one of the largest volcanoes in the Flood Range and Ames Range.

Harvey Cirque () is a cirque containing a small glacier between Scheuermann Spur and Corell Cirque in the southern part of the Darwin Mountains of Antarctica. The cirque occurs along the extensive Prebble Icefalls which contribute some ice to the head of the cirque; there is limited flow from the cirque to Hatherton Glacier. It was named after geologist Ralph P. Harvey of Case Western Reserve University, Cleveland, Ohio, who was engaged in the United States Antarctic Program Antarctic Search for Meteorites (ANSMET) in the Transantarctic Mountains for many austral summers, 1992–2001, ultimately as ANSMET principal investigator.

Mawson Glacier () is a large glacier on the east coast of Victoria Land, Antarctica, descending eastward from the Antarctic Plateau to the north of Trinity Nunatak and the Kirkwood Range, to enter the Ross Sea, where it forms the Nordenskjöld Ice Tongue. The glacier was first mapped by the British Antarctic Expedition (1907–09) and named for Douglas Mawson, the expedition physicist, who later led two other Antarctic expeditions, 1911–14, and 1929–31. Reckling Peak is located at the icefalls at the head of Mawson Glacier, which also produced Reckling Moraine. Both Shultz Peak and Mount Armytage are south of the glacier.

The mountain is surrounded by glaciers. To the north, at the foot of the Northeast Face, is the heavily crevassed Krimmler Kees with its jagged icefalls. To the east and south lies the Umbalkees, which climbs to a height of 3,400 metres; to the west is the Lahner Kees which extends far into the summit region. Neighbouring peaks include the Umbalköpfl, 600 metres away on the course of the prominent East Arête at 3,426 m and, a further 1,000 metres to the east, the 3,481-metre-high Western Simonyspitze, which is named after Austrian alpine researcher and geographer, Friedrich Simony.

They then headed for Nup LaNup La is a col that had been reached from Tibet during the 1924 British Mount Everest expedition but it had not been crossed. It was first crossed by Hillary and George Lowe during the 1952 Cho Oyu expedition;. but progress was slowed by two considerable icefalls so they abandoned the attempt and travelled back to Namche Bazaar improving the mapping of the Chola Khola region as they went. Meanwhile, Shipton and Hillary descended the Khumbu and then travelled east up the Imja glacier which is south of the Lhotse–Nuptse wall.

With the recent volcanic activity starting in 2004, the glacier lobes were pushed aside and upward by the growth of new volcanic domes. The surface of the glacier, once mostly without crevasses, turned into a chaotic jumble of icefalls heavily criss-crossed with crevasses and seracs caused by movement of the crater floor. The new domes have almost separated the Crater Glacier into an eastern and western lobe. Despite the volcanic activity, the termini of the glacier have still advanced, with a slight advance on the western lobe and a more considerable advance on the more shaded eastern lobe.

Mount Madison () is a prominent, largely ice-covered mountain in Antarctica, rising to west of Cape Selborne, on the south side of Byrd Glacier. It was named by the Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant Commander Douglas W. Madison, aide to the Commander, U.S. Naval Support Force Antarctica, 1961–62, and Public Information Officer, 1963–64. Madison Terrace () is a rectangular terrace, 6 nautical miles (11 km) long and 3 nautical miles (6 km) wide, abutting the south part of Mount Madison on Shackleton Coast. Ice draining from Mount Madison covers the terrace, which terminates in a line of icefalls within Couzens Bay.

All other portions of the headwall are too steep to climb safely without climbing gear and technical expertise. Several popular rock-climbing routes, such as the Pinnacle route and the Henderson Ridge, do ascend the ravine, and in the winter the Pinnacle Gully is especially popular as an ice- climbing challenge. Because the ravine is higher and more exposed to the elements than most other climbing areas in the eastern United States, rock and ice climbing — and even hiking — are risky and weather-dependent. Avalanches, icefalls, and hypothermia have killed climbers in Huntington repeatedly in recent years, and the hiking path is usually not passable until late May or early June.

Visiting the glacier now requires a helicopter flight past the unstable terminal face. Glacier walks also require some specialised equipment, namely ice axes and crampons that latch onto a sturdy boot. These are usually provided by tour companies.Terminal face of Franz Josef Glacier viewed from lookout at end of valley walk as of 2014 As the walking part of any tour up to the glacier takes a long time, and ends at the first icefall (a frozen waterfall, draping a natural step in the land underneath), many tourists book helicopter tours from one of the several local airlines, which usually drop their guests between the first and second icefalls, for a guided 1–2 hour walk through the broken ground atop the glacier.

From the ice falls, short glaciers up to long descend to elevations of , with lower elevations reached on the eastern side. The largest of these glaciers is the Qori Kalis Glacier, which extends from the northern sector of Quelccaya westwards; in general there is a contrast between lobe-like glaciers that emanate into the shallow valleys of the south-western side of Quelccaya and steeper glaciers with crevasses that descend into deeper valleys elsewhere around the ice cap. On the southern side of the ice cap, the ice cap ends in four cirques with icefalls at their head and four sets of moraines downstream. Melting at Quelccaya occurs at the bottom and at the margins of the ice cap, where meltwater is discharged.

Hillary and Lowe with three "very nervous" Sherpas (Ang Puta, Tashi Puta and Angye) had crossed the Nup La col, so made the first crossings of the three cols between the Khumba and the Barun Valley. "We attempted the heavily crevassed head of the Ngojumba Glacier and forced a way up the narrow Nup La Pass". Hillary and Lowe "like a couple of naughty schoolboys" went deep into Chinese territory, down to Rongbuk and round to the old prewar Camp III beneath the North Col. Crossing the icefalls took six days to cover but was said Lowe "the most exciting, exacting and satisfying mountaineering that we had undertaken" and done "with less than I would have had for a weekend tramp in New Zealand" Going into the Barun Glacier between Everest and Makalu and seeing Tibet from the head completed a circuit of Everest over its highest passes.