Gerry Ellis / Sulphur pool and crater, Poas Volcano National Park, Costa Rica
00202661
Gerry Ellis / Sulphur pool and crater, Poas Volcano National Park, Costa Rica
00142142
Tui De Roy / Volcanic lake, champagne pool, constant 74 degrees Celsius, carbon dioxide fizz, minerals include gold, silver, mercury, sulfur, arsenic, thallium and antimony, Champagne Pool, Waiotapu, Rotorua, New...