Lake trout are commonly found in the deep, oligotrophic lakes in this Section. Freezing conditions may occur year around. Extensive systems of valley glaciers occur at high elevations. Permafrost is discontinuous. Streams are swift and braided, often originate from glaciers, and carry heavy sediment loads.
Lakes are more numerous in the southern portion of the area.
Soils on lower slopes and in valleys over permafrost are typically poorly drained. Wetlands occupy 7 percent of the area. Occurrence of wildfire is low. Snow avalanches are frequent in the winter. Human use of the area is minimal, mainly consisting of hunting and fishing.