Yosemite SE, Ansel Adams Wilderness: Map #309

National Geographic Trails Illustrated Yosemite SE & Ansel Adams Wilderness Map #309 — waterproof, tear-resistant. Coverage of the southeastern Yosemite National Park quadrant, the Ansel Adams Wilderness, John Muir Trail corridor, and surrounding Sierra Nevada wilderness. GPS-compatible.

The National Geographic Trails Illustrated Yosemite SE & Ansel Adams Wilderness Map covers the southeastern Yosemite backcountry and the Ansel Adams Wilderness — the John Muir Trail corridor, Lyell Canyon, the Ritter Range (Banner Peak and Mount Ritter), Thousand Island Lake, and surrounding Sierra Nevada wilderness terrain. Trails, JMT route, wilderness boundaries, backcountry campsites, and GPS coordinates are mapped in detail.

Key specs

• SKU: NGTI309
• Map number: 309
• Coverage: Yosemite SE & Ansel Adams Wilderness, California (Sierra Nevada)
• Material: Waterproof, tear-resistant paper
• Features: Trails, JMT corridor, Ritter Range, Thousand Island Lake, wilderness boundaries, backcountry campsites, GPS coordinates

Why it works

The Ansel Adams Wilderness's Ritter Range and Thousand Island Lake are among the most photographed landscapes in the Sierra Nevada, with the John Muir Trail passing directly through this terrain — accurate JMT route and campsite mapping is essential for thru-hikers and section hikers planning this section. The wilderness permit zone boundaries require detailed mapping for compliant backcountry travel. Waterproof construction survives the Sierra Nevada's afternoon thunderstorms and the variable weather common in the high country.

Ideal for

JMT thru-hikers, backpackers, photographers, and wilderness lovers exploring the Ansel Adams Wilderness and southeastern Yosemite backcountry. See also NGTI263 (Mammoth Lakes & Mono Divide) for adjacent coverage to the south.