Sky Island and Subterranean Exploration

Visit one of Grand Canyon's largest sky islands (a mile long mesa surrounded by towering temples and buttes). Explore turn of the century mining operations where the rails and mining equipment still litter the landscape. Then you'll descend into surreal limestone caverns with giant stalactites, stalagmites and other colorful cave formations. You won't believe you're really in Grand Canyon! Difficulty rating: Difficult
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