Trails Illustrated topographic maps are the most detailed and up-to-date recreation maps available for these national parks, national forests and popular outdoor recreation areas. Coverage in this map includes: Stanislaus National Forest, Toiyabe National Forest, Inyo National Forest, Sierra National Forest Emigrant Wilderness, Carson Iceberg Wilderness, Hoover Wilderness, Yosemite Wilderness, and Ansel Adams Wilderness with detail on Yosemite Valley and Tuolumne Meadows. Also provides UTM grids for use with your GPS unit.