Pioneer Heights is a group name in the Heritage Range, Ellsworth Mountains, encompassing the large area of hills, ridges and peaks located eastward of Schneider and Schanz Glaciers and between Splettstoesser and Union Glaciers. Among these features are the Inferno Ridge, the Nimbus Hills, Gross, Buchanan and Collier Hills. The Pioneer Heights were mapped by the United States Geological Survey (USGS) from ground surveys and U.S. Navy air photos from 1961 to 1966. The name was applied by the Advisory Committee on Antarctic Names (US-ACAN) in association with the name Heritage Range. See also Mountains in Antarctica Geographical features include: Gross Hills Inferno Ridge Nimbus Hills Samuel Nunataks Other Nimbus Hills features Other features Buchanan Hills Collier Hills Donald Ridge Flanagan Glacier Johnson Neck Mount Sporli Mount Virginia Rennell Glacier Ronald Ridge Schmidt Glacier (Antarctica) Thompson Escarpment Union Glacier References Mountains of Ellsworth Land