From Death Valley to the Grand Canyon, the American West features an astonishing array of geological extremes. Journey to seven incredible national parks in Utah, Arizona, and California, and gain new perspectives from scientists, naturalists, and other local experts along the way. Peer up at Sequoia s General Sherman the planet s largest known living single-stem tree and wade through the spectacular Narrows slot canyon. Step into the stunning natural sandstone cathedral of Antelope Canyon alongside a Navajo guide, and experience the sweeping majesty of the Grand Canyon and Yosemite. Cap off the adventure amid the urban vitality of San Francisco.