Mount Overlord on:
[Wikipedia]
[Google]
[Amazon]
Mount Overlord is a very large 
mountain
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited Summit (topography), summit area, and ...
which is an extinct stratovolcano
A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and per ...
, situated at the northwest limit of Deception Plateau
Mountaineer Range is the range of mountains lying between the Mariner and Aviator Glaciers in Victoria Land, Antarctica. The seaward parts of the range were first viewed by Ross in 1841, and subsequently by several British and later American expe ...
, 50 miles inland from the Ross Sea
The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment, and is the southernmost sea on Earth. It derives its name from the British explorer James Clark Ross who vi ...
and just east of the head of Aviator Glacier in Victoria Land
Victoria Land is a region in eastern Antarctica which fronts the western side of the Ross Sea and the Ross Ice Shelf, extending southward from about 70°30'S to 78°00'S, and westward from the Ross Sea to the edge of the Antarctic Plateau. It ...
. Its asymmetrical cone is on the edge of a plateau above Aviator Glacier. While most of the cone is ice-covered, Mount Overlord does have a 1.2-mile (0.8 kilometer) diameter caldera. Volcanic rocks from the western slope have been dated to about seven million years, so the volcano is thought to be extinct.
It was so named by the northern party of New Zealand Geological Survey Antarctic Expedition The New Zealand Geological Survey Antarctic Expedition (NZGSAE) describes a series of scientific explorations of the continent Antarctica. The expeditions were notably active throughout the 1950s and 1960s.
Features named by the expeditions 1957 ...
(NZGSAE), 1962–63, because it "overlords" lesser peaks in the area.
See also
*List of volcanoes in Antarctica
This is a list of volcanoes in Antarctica.
Table
A 2017 study claimed to have found 138 volcanoes, of which 91 were previously unknown. Some volcanoes are entirely under the ice sheet. Unconfirmed volcanoes are not included in the table below.
...
Sources
* * Three-thousanders of Antarctica Volcanoes of Victoria Land Mountaineer Range Extinct volcanoes Miocene stratovolcanoes Borchgrevink Coast {{BorchgrevinkCoast-geo-stub