Baksan Neutrino Observatory, Prielbrusye National Park

The Baksan Neutrino Observatory is a scientific laboratory of INR RAS located in the Baksan River gorge in the Caucasus mountains in Russia. Cleared for building in 1967, it started operations in 1977, becoming the first such neutrino observatory in the USSR. It consists of the Baksan Underground Scintillation Telescope, located 300 m below the surface, the gallium–germanium neutrino telescope located 4,700 m.w.e. deep as well as a number of ground facilities. The Baksan Experiment on Sterile Transitions is currently being conducted at Baksan with aims of understanding sterile neutrinos. ()