沙克爾頓山脈
Butterfly Knoll () is one of the La Grange Nunataks, located southwest of Mount Beney in the Shackleton Range. It was photographed from the air by the U.S. Navy, 1967, and surveyed by the British Antarctic Survey, 1968–71. It was named by the UK Antarctic Place-Names Committee from its resemblance in plan view to a butterfly.