National Geographic's Trails Illustrated topographical maps, based on USGS information, are designed to take you into the wilderness and back. They show all trails, campsites, and recreational features, plus relevant information on wildlife history, geology, and archaeology.

• The most comprehensive and complete recreational map for Yosemite National Park
• Printed on waterproof, tear-resistant material with a plastic coating that offers supreme durability
• Dimensions: 4 x 9 inches folded; 28 x 32 inches fully opened
• 1987 edition, revised 2000; scale: 1:100,000