 The <unk> , <unk> forested areas occur on south @-@ facing slopes from 3 @,@ 000 feet ( 910 m ) to 6 @,@ 500 feet ( 2 @,@ 000 m ) . Due to the occurrence of frequent non @-@ lethal fires , ponderosa pine dominates these forests alongside Douglas fir . The understory consists of bluebunch wheatgrass , Idaho <unk> , mountain snowberry , and <unk> in drier areas and elk <unk> , <unk> , white <unk> , <unk> <unk> , and common snowberry at higher elevations . 
