Elling Carlsen Carlsen made his first voyage out of Hammerfest in Finnmark, Norway. In 1859, Carlsen discovered the island group that would later be named Kong Karls Land in the Svalbard archipelago in the Arctic Ocean. Although Carlsen is credited with the finding, the islands may have been first sighted by the whaler Thomas Edge in 1617. In 1863, Carlsen completed the first circumnavigation of Spitsbergen. During a voyage to the Arctic Ocean in 1871, Carlsen discovered the lodge of Willem Barentsz on the north-eastern shore of the archipelago of Novaya Zemlya. This winter camp had been used as shelter by Barentsz
Novaya Zemlya avalanche that blocked two glacial streams and created a lake in length. Over its history as a nuclear test site, Novaya Zemlya hosted 224 nuclear detonations with a total explosive energy equivalent to 265 megatons of TNT. For comparison, all explosives used in World War II, including the detonations of two US nuclear bombs, amounted to only two megatons. In 1988–1989, "glasnost" helped make the Novaya Zemlya testing activities public knowledge, and in 1990 Greenpeace activists staged a protest at the site. The last nuclear test explosion was in 1990 (also the last for the entire Soviet Union and Russia).