One of the Bender Mountains, 1,140 metres (3,740 ft) high, standing between the edge of Ross Ice Shelf and the Watson Escarpment.

Small group of peaks 10 nautical miles (19 km; 12 mi) south of the terminus of Reedy Glacier, between the southeast edge of the Ross Ice Shelf and Watson Escarpment.

An undulating ridge, 3 nautical miles (5.6 km; 3.5 mi) long, forming the southwest portion of the Berry Peaks.

One of the Berry Peaks, 1,005 metres (3,297 ft) high, standing between the southeast edge of the Ross Ice Shelf and Watson Escarpment.

Named by US-ACAN for James C. McCaslin, a member of the U.S. Army Aviation Unit which supported the USGS Topo East survey in 1962-63.