Pinnacle Rock (Antarctica)

Pinnacle Rock is a prominent rock formation located in Antarctica. Specifically, it lies within the Quartermain Mountains of Victoria Land. Its defining characteristic is its sharply pointed, pinnacle-like shape, giving it its descriptive name.

The rock's composition is primarily sandstone. It is often exposed due to the scouring action of glaciers and katabatic winds in the region, leaving it relatively free of ice and snow cover, especially during the Antarctic summer.

Pinnacle Rock serves as a valuable navigational landmark for researchers and explorers operating in the remote and often featureless landscape of the Quartermain Mountains. It can also be a site of geological interest, offering insights into the region's geological history and the processes of erosion and weathering in extreme cold environments. While not a major research station or base, Pinnacle Rock's visual prominence makes it a recognizable point of reference for scientific expeditions and logistical operations in the area.