The Trapper's Homestead is located in the southwestern corner of the map and provides another highly hospitable location for extended survival. The westernmost portion of the Mystery Lake region exhibits hillier and more heavily forested terrain, required increased caution for the explorer. In particular, wolves are common near the Train Loading Area and Derailment locations. Wolves congregate along several locations along the railroad. The railway provides a passable north-south walkway along the central portion of the map. Wolves are plentiful on and around the lake. The Camp Office, one of the more hospitable structures in the region, is found on the west entrance to the lake, and fishing huts and cabins are scattered across the lake and its perimeter. The river provides the most direct path between Carter Hydro Dam and Mystery Lake along the eastern parts of the map. The map has a hilly terrain, and a few primary walkways allow navigation between destinations. Additionally, Pleasant Valley is accessible through Carter River, a transition region found behind Carter Hydro Dam. It is possible to travel through the Ravine to Coastal Highway within a few days.

There are many buildings and other landmarks to discover and loot. Mystery Lake is one of the Regions available in the Sandbox mode of The Long Dark.

Long dark map mystery lake