![]() As the water cut its way downward, seeking lower levels, it left hollow, air-filled caves. ![]() Water entered, enlarging the cavities as it flowed through and filled them. When the slightly acidic rainfall penetrated cracks and crevices in the limestone, cavities were formed. The exposed land was shaped by the elements, such as wind and rain, into mountains and rivers. When prehistoric land masses shifted, the seabed was uplifted about 300 million years ago to form the Ozark Plateau. The limestone rock from which the cave developed was formed by fossilized sediment from sea creatures at the bottom of an ancient inland sea estimated to exist about 350–500 million years ago. Three guided tours through the caves are open to the public: the Dripstone Trail (open all year), the Discovery Trail (open during the summer), and the Wild Cave (open by special reservation). Forest Service, it is considered one of the most beautiful in the country. Francis National Forest, fifteen miles northwest of Mountain View (Stone County). ![]() Blanchard Springs Caverns (BSC) is a magnificent limestone cave system starting more than 200 feet underground in the Sylamore Ranger District of the Ozark–St.
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