Tumbledown Cliffs is a conspicuous rock cliffs on the west coast of James Ross Island

James Ross Island

James Ross Island is a large island off the southeast side and near the northeastern extremity of Antarctic Peninsula, from which it is separated by Prince Gustav Channel. Rising to , it is irregularly shaped and extends in a north-south direction. It was charted in October 1903 by the Swedish...

, about 3 nautical miles (6 km) north of Cape Obelisk

Cape Obelisk

Cape Obelisk is a cape at the north side of the entrance to Rohss Bay, on the west side of James Ross Island. Discovered and named by the Swedish Antarctic Expedition, 1901–04, under Nordenskjold. The name is descriptive of a conspicuous rock pinnacle about 2 nautical miles within the headland,...

. Probably first seen by Dr. Otto Nordenskjold in 1903. Surveyed by Falkland Islands Dependencies Survey (FIDS) in 1945. The name given by United Kingdom Antarctic Place-Names Committee (UK-APC) is descriptive of the formation of the scree slope at the foot of these cliffs.