Hidden Lake is a lake, 1.5 miles (2.4 km) long, lying midway between Lagrelius Point

Lagrelius Point

Lagrelius Point is a low, ice-free point on the northwest side of James Ross Island, 1.5 nautical miles south of Carlson Island. It was discovered and first surveyed in 1903 by the Swedish Antarctic Expedition under Nordenskjold, who named it Cape Lagrelius after Axel Lagrelius of Stockholm, who...

 and 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,...

 in the west part 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...

. It drains by a small stream into the deep bay 4 miles (6 km) south of Lagrelius Point. It was discovered in 1945 by the Falklands Islands Dependencies Survey, who so named it because it is obscured by surrounding highlands.