Named by US-ACAN for Jack L. Harry, USGS Topographic Engineer, a member of the Marie Byrd Land Survey Party, 1967-68.

A nunatak rising to about 800 metres (2,600 ft) high, 1 nautical mile (1.9 km; 1.2 mi) north of Schwartz Peak.

A rock peak 15 nautical miles (28 km; 17 mi) east-southeast of FitzGerald Bluffs in Ellsworth Land.

The peak is one in a chain of small summits lying southeastward of the bluffs and is the dominant feature near the center of the group.

A somewhat isolated rock nunatak, 23 nautical miles (43 km; 26 mi) east-southeast of FitzGerald Bluffs in Ellsworth Land.

It lies 9 nautical miles (17 km; 10 mi) east of Schwartz Peak and is the easternmost member in the chain of small summits located southeast of the bluffs.

A small mountain rising above the ice surface 22 nautical miles (41 km; 25 mi) northwest of Mount Rex, Ellsworth Land.

The area was explored by the RARE (1947–48) under Finn Ronne, who named the mountain for Harries-Clichy Peterson, physicist with the expedition.