Deception Island, located in South Shetland Islands, Antarctica, is a complex stratovolcano with a ‘‘horseshoe’’ shape whose central part has a caldera structure. This volcanic island has been very active during the last century: fumarolic emissions, thermal springs and hot soils are evidence of Deception Island’s continuing activity. Geothermal anomalies are mainly found from Fumarole Bay to Pendulum Cove. The temperatures of emissions range from 90–110ºC at the fumaroles of Fumarole Bay. The soil temperature is highly variable, reaching values between 40–60ºC at Whalers Bay, and more than 70ºC at Pendulum Cove.