nature
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Glacier National Park: Mountains, Glaciers and Lakes
Glacier National Park consists of sedimentary rocks deposited in layers some 1.5 billion years ago. About 150 million years ago, plate tectonics pushed up and moved the sedimentary rocks forming a four-mile-thick slab of rock. About two million years ago,… Continue reading
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Great Basin National Park – Mountains, Forests, Caves and Ancient Trees
The Great Basin is a region lying northwest of the Colorado Plateau bounded by mountain ranges with no external drainage. The Great Basin National Park lies close to the border between Nevada and Utah, on the Nevada side; it overlooks… Continue reading
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Canyonlands—Island in the Sky
The Canyonlands lie at the confluence of the Green and Colorado rivers, each of which has eroded a deep canyon into the Colorado Plateau, creating a sort of “peninsula in the sky,” which is called Island in the Sky The… Continue reading
Journey Across America 