They are south of Gressitt Glacier and midway between Emlen Peaks to the west and the Morozumi Range to the east.

The phyllites at the lowest level in the east of Boggs Valley are similar to the rocks of the Morozumi Range, with simple deformation.

Named by US-ACAN for biologist J. Linsley Gressitt, Program Director who made biological studies, particularly in the Ross Sea area, in six austral summers, 1959-60 to 1965-66.

A mountain, 1,775 metres (5,823 ft) high, 4 miles (6.4 km) northwest of Mount Bresnahan in the north part of Helliwell Hills.

A flat-topped, mainly ice-free mountain, 1,630 metres (5,350 ft) high, situated along the east side of the Helliwell Hills, 6 miles (9.7 km) north-north-east of Mount Van der Hoeven.

Named by US-ACAN after David M. Bresnahan, USARP biologist at McMurdo Station, 1967–68 and 1968–69; on staff of Office of Polar Programs, National Science Foundation, from 1970.

A mountain, 1,940 metres (6,360 ft) high, at the north side of the head of Boggs Valley, near the center of Helliwell Hills.

Named by US-ACAN for Frans G. Van der Hoeven, seismologist and leader of the USARPsponsored Victoria Land Traverse, 1959-60.

The 1,530 mile seismic and topographic traverse in Tucker Sno-Cat vehicles took a roughly triangular course, beginning at Hut Point Peninsula, Ross Island, and ascending to the plateau of Victoria Land via Skelton Glacier.

A flat-topped, ice-free mountain, 1,480 metres (4,860 ft), at the south side of Boggs Valley in the Helliwell Hills.