Descend nearly 200 stairs at the Carmichael Entrance of Mammoth Cave, pass the craggy breakdown of the Rocky Mountains and enter gypsum encrusted Cleaveland Avenue. This tour showcases gypsum in various crystalline shapes and sizes. The beautifully elliptical Cleaveland Avenue terminates in the Snowball Room, viewed by visitors since the 1840s. Food may be purchased from the park's concessionaire during the 45 minutes spent in this room, traditionally a 20th-century underground meal stop. Visitors retrace Cleaveland Avenue, ascending nearly 200 stairs at the Carmichael Entrance.
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