Parks and Monuments in the United States. In addition, ancient fires that once fed a chain of volcanoes along the crest of the Sierra Nevada in California, now completely eroded away, melted the great granite masses that eventually hardened and eroded into the land that is now Yosemite and Sequoia National Parks.This book tells where and how volcanoes are created, and describes the beautiful and awesome examples found in the USA's National Parks and Monuments. It also provides updated travel information on reaching and enjoying these magnificent places, and is beautifully illustrated in Odyssey's distinctive style. This guide provides an original formula for understanding the world beneath our feet. 120 color photos, 26 maps & plans.

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