Mount Cyril is an ice-covered mountain, 1,190 metres (3,900 ft) high, standing 2 nautical miles (4 km) south of Celebration Pass in the Commonwealth Range. It was discovered and named by the British Antarctic Expedition, 1907–09, under Shackleton, and named for Cyril Longhurst, Secretary of the British National Antarctic Expedition, 1901–04, who was best man at Shackleton's wedding.
Map of Mount Cyril, Antarctica
References
Mount Cyril Wikipedia(Text) CC BY-SA