It was named by the Victoria University of Wellington Antarctic Expedition (1958–59) for Hercules, a figure in Greek mythology.
The cirque is 1 nautical mile (2 km) wide and in part occupied by a glacier.
Marsh investigated basement sill at McMurdo Dry Valleys sites in seven field seasons, 1995–2005, for the United States Antarctic Program.
[3] Harris Ledge lies to the north, and just west of it is Fritsen Valley.
[4][5] This article incorporates public domain material from websites or documents of the United States Geological Survey.