Grand Canyon Caverns
A grinning green dinosaur welcomes visitors to this long-familiar tourist attraction. What is now one of the largest registered dry caverns in the United States was once the bottom of an ancient ocean that covered the southwest.
Discovered in 1927, the caverns offer a forty-five minute underground guided tour. You will drop twenty-one stories (3/4 of a mile,) by elevator and walk through a string of caverns, some the size of football fields, with stalagmites, onyx, flowstone formations and the largest deposit of Selenite crystals, including helictites. Source: www.azrt66.com
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