Although Microsoft's Encarta and Encarta World Atlas both describe the Cascades as being a northern continuation of the Sierra Nevada Mountains I'm informed by Donald Mark (firstname.lastname@example.org) that this is not the case. Donald says "the Cascades are not an extension of the Sierra Nevadas. They are a completely separate range with different origins. The Cascades are largely volcanic; the Sierras are fault block mountains." My thanks to Donald for setting the record straight.
The Cascades lie to the east of the Coast Ranges, about 100 to 150 miles inland from the coast itself. In Oregon, the fertile Willamette Valley lies between the Coast Ranges and the Cascades.
In California Mount Shasta is part of the Cascade Range.
In Oregon Crater Lake National Park and Mount Hood lie in the Cascade Range.
In Washington State many volcanoes including Mount St Helens and Mount Rainier lie in the Cascades. The North Cascades National Park in northern Washington State is highly scenic, although access is largely limited to Washington State Road 20.
Rainfall levels are high to the west of the Cascades and in the mountains themselves. To the east of the Cascades rainfall is very considerably less.
Pacific Coast Highway
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