Mount Moulton is a broad, ice-covered shield volcano

Shield volcano

A 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...

 standing 16 km (10 mi) E of Mount Berlin

Mount Berlin

Mount Berlin is the sixth highest volcano in Antarctica, located 16 km west of Mount Moulton in Marie Byrd Land near the eastern coast of the Ross Sea. It is composed of two coalesced shield volcanoes: Marren Peak and Berlin Crater...

 in the Flood Range

Flood Range

The Flood Range is an Antarctic range of large snow-covered mountains extending in an E-W direction for about 96 km and forming a right angle with the southern end of the Ames Range in Marie Byrd Land....

, Marie Byrd Land

Marie Byrd Land

Marie 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...

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Discovered on aerial flights by the United States Antarctic Service in 1940, and named for Richard S. Moulton, chief dog driver at West Base and a member of the survey party which sledged to the western end of the Flood Range in December 1940.
On the northern slopes of Mount Moulton, there are steep icefalls, called the Moulton Icefalls.

The Prahl Crags

Prahl Crags

Prahl Crags are a group of rock crags at an elevation of 2,750 m on the south slopes of the Mount Moulton massif, in Marie Byrd Land. Mapped by United States Geological Survey from ground surveys and U.S. Navy air photos, 1959-66. Named by Advisory Committee on Antarctic Names for Sidney R...

are located on the souther slopes of Mount Moulton.