A prominent mountain 3,020 metres (9,910 ft) high standing 6 nautical miles (11 km; 6.9 mi) northwest of Mount Hart.

Named by US-ACAN for Lieutenant Commander Jare M. Pearigen, United States Navy, helicopter pilot in Operation Deep Freeze 1968, 1969 and 1970.

Named by US-ACAN for Lieutenant Vemon D. Hart, officer in charge of the United States Navy Squadron VX-6 winter party at McMurdo Station, 1968.

A conspicuous peak 3,335 metres (10,942 ft) high standing 1.6 nautical miles (3.0 km; 1.8 mi) northeast of Mount Peacock and overlooking the terminus of Ironside Glacier from the south .

Discovered in January 1841 by Sir James Clark Ross who named it for the Very Reverend Doctor George Peacock, Dean of Ely.