The Gair, Tobin and Pain mesas are in the east side of the middle reach of the Rennick Glacier, and the Sheehan Mesa is on the west side. The Monument Nunataks are to the northwest, the Freyberg Mountains to the north, Half-ration Névé and the larger Evans Névé to the northeast, the Southern Cross Mountains to the east, and the Deep Freeze Range to the south.[2]
73°01′S162°18′E / 73.017°S 162.300°E / -73.017; 162.300.
A prominent mesa standing 10 nautical miles (19 km; 12 mi) west-northwest of Pain Mesa in the northwest part of Mesa Range.
Named by the northern party of NZGSAE, 1962–63, for Maurice Sheehan, field assistant with this party.[3]
Silva Ridge
72°59′S162°17′E / 72.983°S 162.283°E / -72.983; 162.283.
A ridge leading to the top of Sheehan Mesa, on the northeast side.
Large silicified tree stumps in place of growth were found halfway up this ridge, hence named Silva by the Northern Party of NZGSAE, 1962–63.[4]
73°04′S163°12′E / 73.067°S 163.200°E / -73.067; 163.200.
A small peak 2,530 metres (8,300 ft) high on the east side of Pain Mesa.
Named by the northern party of NZGSAE, 1962–63, from its resemblance to the square cap worn by Roman Catholic and some Anglican clerics.[7]
Mills Valley
73°06′S163°12′E / 73.100°S 163.200°E / -73.100; 163.200.
An ice-filled valley indenting the east side of Pain Mesa between Biretta Peak and Diversion Hills.
Mapped by USGS from surveys and United States Navy air photos, 1960–64.
Named by US-ACAN for Commander Norman J. Mills, United States Navy Reserve, officer in charge of the Detachment A winter party at McMurdo Station, 1967.[8]
73°14′S163°03′E / 73.233°S 163.050°E / -73.233; 163.050.
A pinnacle-type mountain 2,900 metres (9,500 ft) high which forms the south end of Pain Mesa and the north side of the entrance to Pinnacle Gap.
Mapped by USGS from surveys and United States Navy air photos, 1960–64.
Named by US-ACAN for Commander Justin G. Ballou, United States Navy, officer in charge of the Detachment A winter party at McMurdo Station, 1966.[10]
73°13′S162°40′E / 73.217°S 162.667°E / -73.217; 162.667.
A bold rock bluff that forms the northwest end of Tobin Mesa.
The bluff exposes an easily accessible section of Jurassic basalt.
The feature was studied by Ohio State University geological parties in 1981–82 and 1982–83.
Named by US-ACAN after Mary A. Siders, geologist in those field parties.[12]
Pinnacle Gap
A gap between Pain and Tobin Mesas.
The feature was traversed and so named by the northern party of NZGSAE, 1962-63, because it is readily identified by the high rock pinnacle (Mount Ballou) on the north ridge overlooking the gap.[13]
Watchtower Hill
73°16′S163°08′E / 73.267°S 163.133°E / -73.267; 163.133.
A small, pointed hill at the southeast side of Pinnacle Gap.
So named by the northern party of NZGSAE, 1962–63, because the feature provides a good "watchtower" to the entrance of Pinnacle Gap.[14]
Haban Spur
73°18′S163°00′E / 73.300°S 163.000°E / -73.300; 163.000.
A bold rock spur 3 nautical miles (5.6 km; 3.5 mi) north of Scarab Peak, extending northeast from the east central part of Tobin Mesa.
The feature was geologically studied by an Ohio State University field party during the 1982–83 season.
Named by US-ACAN after Marta A. Haban, a geologist in the party.[15]
Scarab Peak
73°21′S163°01′E / 73.350°S 163.017°E / -73.350; 163.017.
A prominent peak, 3,160 metres (10,370 ft) high, located 2 nautical miles (3.7 km; 2.3 mi) northeast of Mount Frustum in the southeast end of Tobin Mesa.
Named by the northern party of the NZGSAE, 1962–63, for its resemblance to a scarab beetle.[16]
Mount Frustum
73°23′S162°55′E / 73.383°S 162.917°E / -73.383; 162.917.
A large pyramidal shaped table mountain, 3,100 metres (10,200 ft) high, standing between Mount Fazio and Scarab Peak in the south part of Tobin Mesa.
Named by the northern party of NZGSAE, 1962–63, for its frustum-like shape.[17]
Mount Fazio
73°23′S162°48′E / 73.383°S 162.800°E / -73.383; 162.800.
An ice-free mountain, 2,670 metres (8,760 ft) high, marking the southwest end of Tobin Mesa.
Mapped by USGS from surveys and United States Navy air photos, 1960–64.
Named by US-ACAN for William V. Fazio, United States Navy, helicopter crewmember during United States Navy OpDFrz, 1966, 1967 and 1968.[18]
73°32′S162°43′E / 73.533°S 162.717°E / -73.533; 162.717.
A low hill at the southwest end of Gair Mesa.
So named by the northern party of NZGSAE, 1962–63, because the west side of the hill has a noteworthy exposure of light colored sandstone.[21]