Deception Island (62°57'S, 60°38'W) is an active volcano in the South Shetland Islands, off the Antarctic Peninsula.
Its total land area, including outlying islands, is 98.5 km². It is 15 km in diameter and rises to 539 m above sea level at Mount Pond. Over 57% of the island is covered by permanent glaciers. A ring of hills runs around the island and is the principal drainage divide - ephemeral springs flow toward the inner and outer coast. Several lakes are located on the interior side of the watershed. Kroner Lake is the only geothermal lagoon in the Antarctic.