Ruby Falls is a series of underground cascading waterfalls totaling 90 feet in Lookout Mountain, near Chattanooga, Tennessee, in the United States. About 300 to 360 million years ago, the eastern Tennessee area was covered with a shallow sea, the sediments of which eventually formed limestone rock. About 200 million years ago, this area was uplifted, fo…
Ruby Falls is a series of underground cascading waterfalls totaling 90 feet in Lookout Mountain, near Chattanooga, Tennessee, in the United States. About 300 to 360 million years ago, the eastern Tennessee area was covered with a shallow sea, the sediments of which eventually formed limestone rock. About 200 million years ago, this area was uplifted, forming Lookout Mountain and nearby ridges. Slightly acidic groundwater running through cracks in the limestone slowly dissolved the relatively soluble rock, causing narrow cracks to widen into passages. This process, called chemical weathering, caused various caves to form inside Lookout Mountain.
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