This is a mountain range near Koktebel, which rises 268 m above sea level and is from 300 m to 600 m wide, with three distinctive peaks. Uzun-Sirt translates from Turkic as "lengthy spine" or "backbone". The mountain is a cradle of gliding and paragliding in this country. In 1924, the mountain was renamed in honour of pilot Pyotr Klementyev, who crashed here while gliding. It was here that chief designers Oleg Antonov and Alexander Yakovlev and the developer of spacecraft Sergei Korolyov started out on their careers.