Pensacola Mountains near the Foundation Ice Stream, which Operation IceBridge surveyed on Oct. 28, 2012. Credit: NASA / Maria-Jose Vinas
They extend 450 km (280 mi) in a NE-SW direction. Although the Subranges of the Pensacola Mountains include. Argentina Range, Forrestal Range, Dufek Massif, Cordiner Peaks, Neptune Range, Patuxent Range, Rambo Nunataks and Pecora Escarpment. Also These mountain units lie astride the extensive Foundation Ice Stream and Support Force Glacier which drain northward to the Ronne Ice Shelf.