Severnaya Zemlya Severnaya Zemlya Severnaya Zemlya ( (Northern Land), ) is a archipelago in the Russian high Arctic. It lies off Siberia's Taymyr Peninsula, separated from the mainland by the Vilkitsky Strait. This archipelago separates two marginal seas of the Arctic Ocean, the Kara Sea in the west and the Laptev Sea in the east. Severnaya Zemlya was first noted in 1913 and first charted in 1930–32, making it the last sizeable archipelago on Earth to be explored. Administratively, the islands form part of Russia's Krasnoyarsk Krai federal subject. In Soviet times there were a number of research stations in different locations,
Sukhoy Nos the former USSR, being the third detonating site of three on the Novaya Zemlya archipelago (designated "Zone C"), as well as the northernmost site. It was used between 1958 and 1961 and was the 1961 explosion site of the RDS-220 hydrogen bomb, also known as Tsar Bomba. Sukhoy Nos Sukhoy Nos, also Sukhoi Nos () is a cape on Severny, the northern island of the archipelago Novaya Zemlya, belonging to Arkhangelsk Oblast of the Russian Federation, projecting into the Barents Sea. The site lies near the southwestern corner of the island, very close to the Matochkin Strait, which separates Severny