Mongolian Passage
From WikiRaider
Mongolian Passage is the only Base Camp in the Glacial Cavern Location of Rise of the Tomb Raider.
Lara encounters this Base Camp after defeating the Bear in the Siberian Wilderness and entering the tunnel that leads to the Glacial Cavern. This is the second camp Lara finds in the course of the game. It is located near a pool of melt water, where Lara has to dive for the first time.