Tonagh Island

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Tonagh Island ( 67°6′S50°18′E / 67.100°S 50.300°E / -67.100; 50.300 Coordinates: 67°6′S50°18′E / 67.100°S 50.300°E / -67.100; 50.300 ) is a steep-sided, flat-topped island, 4 nautical miles (7 km) long and 2 nautical miles (3.7 km) wide, lying southwest of the mouth of Beaver Glacier in the south part of Amundsen Bay. Sighted in October 1956 by an ANARE (Australian National Antarctic Research Expeditions) party led by P.W. Crohn and named for Lieutenant Leslie Tonagh, DUKW driver with the ANARE, 1956.

Geographic coordinate system Coordinate system

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.

Island Any piece of sub-continental land that is surrounded by water

An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be called an eyot or ait, and a small island off the coast may be called a holm. A grouping of geographically or geologically related islands is called an archipelago, such as the Philippines.

Beaver Glacier (Enderby Land) glacier in Enderby Land, Antarctica

Beaver Glacier is a glacier about 15 miles (24 km) long and 4 miles (6 km) wide, flowing west into Amundsen Bay between Auster Glacier and Mount Gleadell. The head of Beaver Glacier is located very close to the base of Mount King in Enderby Land. It was visited by an Australian National Antarctic Research Expeditions (ANARE) party on October 28, 1956, and named after the Beaver aircraft used by ANARE in coastal exploration.

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PD-icon.svg This article incorporates  public domain material from the United States Geological Survey document "Tonagh Island" (content from the Geographic Names Information System ).

United States Geological Survey scientific agency of the United States government

The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility.

Geographic Names Information System geographical database

The Geographic Names Information System (GNIS) is a database that contains name and locative information about more than two million physical and cultural features located throughout the United States of America and its territories. It is a type of gazetteer. GNIS was developed by the United States Geological Survey in cooperation with the United States Board on Geographic Names (BGN) to promote the standardization of feature names.


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Mount Bergin is a mountain, 700 m, standing 4 nautical miles (7 km) west of Mount Maslen in the Raggatt Mountains, Enderby Land. It was plotted from air photos taken from ANARE aircraft in 1956. It was named by Antarctic Names Committee of Australia (ANCA) for R.D. Bergin, radio officer at Mawson station in 1956.

Campbell Peak is a peak, 2,415 metres (7,920 ft) high, standing 1.2 nautical miles (2.2 km) northeast of Mawson Peak, the summit of Heard Island. It was surveyed in 1948 by the Australian National Antarctic Research Expeditions (ANARE), who named it for Group-Captain Stuart A. Campbell, Royal Australian Air Force. Campbell visited Heard Island in 1929 as aircraft pilot with the British Australian New Zealand Antarctic Research Expedition led by Douglas Mawson, and again as leader of ANARE when a research station was established on the island in December 1947.

Waratah Islands is a pair of small islands lying close to the coast about 1 nautical mile (1.9 km) northwest of Hannan Ice Shelf, Enderby Land. Plotted from air photos taken from ANARE aircraft in 1956. Named by Antarctic Names Committee of Australia (ANCA) after the Australian native plant Waratah.

Wattle Island is a small island lying close to the coast and 6 nautical miles (11 km) east of Kirkby Head, Enderby Land. Plotted from air photos taken from ANARE aircraft in 1956. Wattle is the vernacular name given to over 400 species of Acacia found in different parts of Australia.

Mount Weller is a mountain, 1,080 m, standing west of Auster Glacier and 2 nautical miles (3.7 km) east of Reference Peak in Enderby Land. It was plotted from air photos taken by ANARE in 1956 and was named by the Antarctic Names Committee of Australia (ANCA) for G.E. Weller, a meteorologist at Mawson Station in 1961.

White Massif is a rock massif about 3 nautical miles (6 km) east-northeast of Thomson Massif in the Aramis Range, Prince Charles Mountains. Plotted from ANARE air photos taken in 1956 and 1960. Named by Antarctic Names Committee of Australia (ANCA) for R.F. White, senior technician (electronics) at Mawson Station in 1963 who died there on October 18, 1963.

Mount Cronus is a majestic, conical, partially snow-covered peak, 900 metres (3,000 ft) high, rising 8 nautical miles (15 km) south of Amundsen Bay and 9 nautical miles (17 km) west-southwest of Reference Peak. It was sighted by an Australian National Antarctic Research Expeditions party in October 1956 and named for Cronus, the father of the gods in classical mythology.

Murray Dome is a dome-shaped rock feature about 3 nautical miles (6 km) southeast of Mount McKenzie in the Aramis Range, Prince Charles Mountains. Plotted from ANARE air photos taken in 1956 and 1960. Named by Antarctic Names Committee of Australia (ANCA) for Dr. L. Murray, medical officer at Macquarie Island in 1963 and at Wilkes Station in 1964.

Grainger Valley is a valley 12 nautical miles (22 km) long and up to 1 nautical mile (2 km) wide separating Manning Massif and McLeod Massif in the eastern part of the Aramis Range, in the Prince Charles Mountains of Antarctica. It was photographed from Australian National Antarctic Research Expeditions (ANARE) aircraft in 1956, and was crossed in February 1969 by a survey party during the ANARE Prince Charles Mountains survey. It was named by the Antarctic Names Committee of Australia for D. Grainger, a geologist with the party, who also took part in the ANARE Prince Charles Mountains survey in 1970.

Mount Twigg is a large rock outcrop bisected by a north-trending glacier, standing 16 nautical miles (30 km) southeast of Mount Maguire near the head of Lambert Glacier. Mapped from ANARE air photos and surveys, 1956-58. Named by Antarctic Names Committee of Australia (ANCA) for D.R. Twigg, radio supervisor at Mawson Station, 1958.

Mount Seaton is a prominent domed peak in eastern Antarctica, one of the Amery Peaks, situated about 3 nautical miles (6 km) south of Sandilands Nunatak in the Prince Charles Mountains. It was plotted by the ANARE southern party led by W.G. Bewsher in January 1957, and named for Pilot Officer John Seaton, a RAAF pilot with the Antarctic Flight at Mawson Station in 1956.

Mount Sones is a mountain standing on the north side of Beaver Glacier, 2 nautical miles (3.7 km) west of Mount Reed in the Tula Mountains. It was plotted from air photos taken by ANARE in 1956 and was named by the Antarctic Names Committee of Australia (ANCA) in 1962 for F. Sones, a member of the crew of the Discovery during the British Australian New Zealand Antarctic Research Expedition (BANZARE) of 1929-31.

Mount Reed is a mountain standing on the north side of Beaver Glacier, 2 nautical miles (3.7 km) east of Mount Sones in the Tula Mountains. It was plotted from air photos taken by ANARE in 1956 and was named by the Antarctic Names Committee of Australia (ANCA) in 1962 for J.E. Reed, a member of the crew of the Discovery during the British Australian New Zealand Antarctic Research Expedition (BANZARE) of 1929-31.

Reference Peak is a roughly conical peak, 1,030 m, with a steep face to the west near its crest, lying 3 nautical miles (6 km) south of Amundsen Bay between Mounts Weller and Hollingsworth. Viewed from the north, it presents a sharp peak with smooth, clear-cut sides. It was sighted in October 1956 by an ANARE party and was so named because the peak was used as a reference point for magnetic observations at Observation Island.

Thompson Island is the largest and northeasternmost of the Balaena Islands, situated about 0.5 nautical miles (0.9 km) from the coast of Antarctica and 15 nautical miles (28 km) northeast of the Windmill Islands. The island consists of two rocky knolls separated by a low saddle of snow. This feature was first photographed from aircraft of U.S. Navy Operation Highjump in February 1947, and was mapped from that photography by Gardner Blodgett in 1955. It was visited by a party of the ANARE on January 19, 1956, and named for Richard Thompson, Administrative Officer, Antarctic Division, Melbourne, who was second-in-command for several years of ANARE relief expeditions to Heard Island, Macquarie Island and Mawson Station.

Mount Charles is a mountain, 1,110 m, standing 3 nautical miles (6 km) south of Mount Cronus in Enderby Land. Plotted from air photos taken by ANARE in 1956 and 1957. The chart drawn by John Biscoe (1830–31) shows four mountains in what is now named Scott Mountains; these four mountains were named Charles, Henry, Gordon and George, probably for the Enderby Brothers, owners of Biscoe's vessels. It has not been possible to identify the mountain so named by Biscoe, but in order to perpetuate the name Antarctic Names Committee of Australia (ANCA) applied it to this feature in 1962.