This acquisition will secure critical inholdings in the West Tiger Mountain NRCA. These inholdings are immediately threatened with conversion to residential uses which are incompatible with the viability of this important urban wildlife area. Distinctive physical features of this site include the talus rocks (caves), two lakes, three predominant stream systems, forested wetland areas on the Tradition Plateau, a dry-site vegetation mosaic dominated by Pacific madrone at Yah-er Wall, and several stands of Douglas-fir forest exhibiting old-growth characteristics. The acquired properties will preserve critical wildlife habitat, open space and scenic vistas along the I-90 corridor and provide opportunities for low-impact recreational uses and outdoor environmental education. Tiger Mountain is a conservation area with immense regional and local importance.