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Mount Berlin is the sixth highest volcano in
Antarctica, located 16 km west of
Mount MoultonMount Moulton is a broad, ice-covered shield volcano standing 16 km E of Mount Berlin in the Flood Range, Marie Byrd Land.Discovered on aerial flights by the United States Antarctic Service in 1940, and named for Richard S...
in
Marie Byrd LandMarie Byrd Land is the portion of West Antarctica lying east of the Ross Ice Shelf and the Ross Sea and south of the Pacific Ocean, extending eastward approximately to a line between the head of the Ross Ice Shelf and Eights Coast. It stretches between 158°W and 103°24'W...
near the eastern coast of the
Ross SeaThe Ross Sea is a deep bay of the Southern Ocean in Antarctica between Victoria Land and Marie Byrd Land.-Description:The Ross Sea was discovered by James Ross in 1841. In the west of the Ross Sea is Ross Island with the Mt. Erebus volcano, in the east Roosevelt Island. The southern part is covered...
. It is composed of two coalesced
shield volcanoA shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They are named for their large size and low profile, resembling a warrior's shield. This is caused by the highly fluid lava they erupt, which travels farther than lava erupted from more explosive volcanoes...
es: Marren Peak and Berlin Crater. The volcanic structure is considered active, as steaming
fumaroleA fumarole is an opening in a planet's crust, often in the neighborhood of volcanoes, which emits steam and gases such as carbon dioxide, sulfur dioxide, hydrochloric acid, and hydrogen sulfide. The steam is created when superheated water turns to steam as its pressure drops when it emerges from...
s have been observed near the rim of the northern and western
calderaA caldera is a cauldron-like volcanic feature usually formed by the collapse of land following a volcanic eruption, such as the one at Yellowstone National Park in the US. They are sometimes confused with volcanic craters...
s, producing fumarolic ice towers.
Discovered by the
ByrdRear Admiral Richard Evelyn Byrd, Jr., USN was a naval officer who specialized in feats of exploration. He was a pioneering American aviator, polar explorer, and organizer of polar logistics...
Antarctic Expedition on flights to the NE and E of Little America in November–December 1934. Named "Mount Hal Flood" by Byrd, but the name Flood is now applied to the entire mountain range of which this is a part. Named by the US-SCAN for Leonard M. Berlin, leader of the USAS party which sledged to this mountain in December 1940.