Complex sentence: The peak was photographed from the air by Lincoln Ellsworth in 1935, and was named by the Advisory Committee on Antarctic Names for Lieutenant Commander Joseph A. Duffy, a U.S. Navy aircraft pilot in Squadron VXE-6 during Operation Deep Freeze, 1969 and 1970.
Split into simpler sentences: The peak was photographed from the air by Lincoln Ellsworth in 1935. Named by Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant Commander Joseph A. Duffy, U.S. Navy, aircraft pilot, Squadron VXE-6, Operation Deepfreeze, 1969 and 1970.