Basalt Lake is a small freshwater lake surrounded by three basalt outcrops with ‘organ-pipe’ formations in their rocks, situated in the central part of the ice-free Byers Peninsula, Livingston Island in the South Shetland Islands, Antarctica. and draining through a 1.6 km stream southwards into Bransfield Strait. The feature is descriptively named from the surrounding rock formations.

Location

Basalt Lake is centred at -62.64306°N, -61.05936°W which is 4.07 km northeast of Sealer Hill, 1.85 km east of Usnea Plug, 1.5 km east-southeast of Chester Cone, 3.02 km west-southwest of Tsamblak Hill and 3.22 km west-northwest from Negro Hill (British mapping in 1968, detailed Spanish mapping in 1992, and Bulgarian mapping in 2005 and 2009).

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