Dyatlov Pass, Mountain pass in Ural Mountains, Russia

Dyatlov Pass is a mountain pass in the northern Urals, between Kholat Syakhl (1,096.7 m) and an unnamed 905 m height, in Sverdlovsk Oblast, 128 km northwest of Ivdel. The memorial is a weathered concrete obelisk with a stepped square base, a plaque bearing six oval portraits with Cyrillic captions, and a red five-pointed star outlined in green below.

In February 1959, a group of nine students from the Ural Polytechnic Institute left their torn tent and fled into the cold, all perishing in the wilderness. Soviet investigators closed the inquiry after several months with inconclusive findings.

The pass takes its name from Igor Dyatlov, the 23-year-old radio engineering student who led the nine hikers of the Ural Polytechnical Institute expedition. The group set off from Sverdlovsk on 23 January 1959 and reached the pass on 1 February; the memorial now stands about 500 m east-southeast of their final camp.

Access requires winter gear, experience in snow hiking, and permission from local administration. Most visitors organize the ascent through specialized trekking guides based in Yekaterinburg who know the harsh terrain.

Research from 2021 showed that rare wind patterns and snow conditions can trigger small but forceful slab avalanches. This discovery provided a scientific explanation for some of the puzzling circumstances that remained unexplained for decades.