The spectacular Ansel Adams Wilderness Area abuts Yosemite National Park, Mammoth Lakes, June Lake and Inyo National Forest. It contains some of the most dramatic alpine scenery in the Sierra Nevada, including beautiful lakes, high peaks, gorges and a few small glaciers. Major trailheads leave from the Mammoth Lakes Basin, Reds Meadow and Agnew Meadows; the last is accessible from June through September, and for the most part only by shuttle.