2020 Map of Grotto

About this map

Grotto and the small settlement of Miller River sit at the northern edge of this high-elevation landscape, where the South Fork Skykomish River carves a path alongside the Old Cascade Hwy. This territory is dominated by the steep peaks of the Snoqualmie National Forest, featuring prominent summits such as Palmer Mtn, Temple Mtn, and Cleveland Mtn. The map reveals a complex network of alpine hydrology, including Lake Kanim, Francis Lake, and Crystal Lake, which feed the various forks and creeks that drain toward the Skykomish and Snoqualmie basins. Transportation through this difficult terrain is marked by engineering feats like the Tunnel on US 2 and the Cascade Stevens Highway Bridge. Seasonal access is noted on routes such as Money Creek Road (Snow), indicating the high-country challenges of the Central Cascades.