 Rock outcrops here were investigated by the Soviet Antarctic Expedition of 1961-62 who named the feature for the Soviet icebreaker "Sibiryakov".Sickle Mountain

Sickle Mountain is a 1,250 m tall mountain standing on the south side of Clarke Glacier and 14 miles (22 km) east of Cape Berteaux, on the west coast of Graham Land.So named by Finn Ronne of the East Base of the United States Antarctic Service (USAS), 1939–41, because its peculiar shape was suggestive of that of a sickle.