Climate, Geography, Map
Park Map -- click to enlarge.

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Great Basin National Park comprises 120 square miles (77,100 acres) in an isolated area of the north-central Great Basin Desert. It includes much of the South Snake Range, a superb example of a metamorphic core complex. Represented within the Park are at least 14,000 feet of marine sedimentary rocks ranging in age from Cambrian through Pennsylvanian.
Climate
This is a fairly arid region. Most precipitation is received as snow or during summer thunderstorms. Winters are cool and summers are mild. Be prepared for changes in weather. Lehman Caves is 50 degrees F, 90% humidity year round; a jacket and suitable walking shoes are recommended. The roads above 8000 feet a usually closed in the winter because of snow. The park Visitor Center and Lehman Caves are open all year.
Getting There
The main park entrance is five miles west of Baker, Nevada along Utah Route 488, near the Nevada-Utah border. Air, bus and train service are unavailable because of the isolation of this national park. The nearest cities are Ely, NV, 70 miles to the west and Delta, UT, 100 miles to the east.

Go to Lehman Caves
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