Pinnacle gap ascent
Pinnacle Gap (73°15′S 163°0′E) is a gap between Pain and Tobin Mesas in the Mesa Range of Victoria Land. The feature was traversed and so named by the northern party of New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1962–63, because it is readily identified by the high rock pinnacle (Mount Ballou) on the north ridge overlooking the gap.
This article incorporates public domain material from the United States Geological Survey document "Pinnacle Gap" (content from the Geographic Names Information System).
References
Pinnacle Gap Wikipedia(Text) CC BY-SA