Complex sentence: The New Zealand Northern Survey Party of the Commonwealth Trans-Antarctic Expedition (1956--58) established a survey station on its summit in December 1957 which was named for Murray H. Douglas, a member of the party.
Split into simpler sentences: The New Zealand Northern Survey Party of the Commonwealth Trans-Antarctic Expedition (1956--58) established a survey station on its summit in December 1957. Named for Murray H. Douglas, a member of the party.