Sukhoy Nos

 peninsula, proving ground

Sukhoy Nos (Russian: Сухой Нос, literally "Dry Nose" but "nos" is a homonym for "narrow peninsula, headland, cape"; there is another Sukhoy Nos on the Vaygach island south of Novaya Zemlya) is a cape on Severny Island, the northern island of the archipelago Novaya Zemlya, projecting westward into the Barents Sea. The site lies near the southwestern corner of the island, 15 km from Mityushikha Bay, north of Matochkin Strait, which separates Severny from Yuzhny Island, the southern island of the archipelago.

Sukhoy Nos was a site of nuclear testing for the former USSR, being the third and the northernmost detonating site of three on the Novaya Zemlya archipelago (designated "Zone C"). It was used between 1958 and 1961 and in October 1961 was the site of the record-breaking 50-megaton hydrogen bomb, known as Tsar Bomba.