A little more information
At a press conference, Brigadier General and first deputy head of the National Emergency Management Agency G. Ariunbuyan said these bodies were found at an altitude of 3200-3450 meters, saying that these mountaineers may have fallen from the cliff.
The 17 Mongolians, including seven women, were among a group of 27 mountain climbers who successfully stood on Mount Otgontenger, but they ran into a snow avalanche when they descended.
http://www.dailyfinland.fi/worldwide...nt-Otgontenger
So they were on their way down when they ran into a snow avalanche. They didn't start the avalanche.