Complex sentence: It was mapped from United States Geological Survey surveys and U.S. Navy air photos from 1956--66, and was named by the Advisory Committee on Antarctic Names for John P. Kaschak, an aviation machinist at Ellsworth Station during the winter of 1958.
Split into simpler sentences: It was mapped from United States Geological Survey (USGS) surveys and U.S. Navy air photos from 1956-66. Named by the Advisory Committee on Antarctic Names (US-ACAN) for John P. Kaschak, an aviation machinist at Ellsworth Station during the winter of 1958.