Tsar Bomba C), north of the Arctic Circle over the Novaya Zemlya archipelago in the Arctic Ocean. The bomb was dropped from an altitude of ; it was designed to detonate at a height of over the land surface ( above sea level) by barometric sensors. The original, November 1961, United States Atomic Energy Commission estimate of the yield was 55–60 megatons, but since 1992, all Russian sources have stated its yield as 58.6 megatons. First secretary Khrushchev warned in a filmed speech to the Supreme Soviet of the existence of a 100-megaton bomb (technically the design was capable of this yield.)
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