The Tallest Underground Waterfall You Can Visit in the U.S. Is Hidden Inside This Tennessee Mountain

The Tallest Underground Waterfall You Can Visit in the U.S. Is Hidden Inside This Tennessee Mountain

You may come to Lookout Mountain for Ruby Falls, but you’ll stay for the scenic views and outdoor adventures.miami2you/Adobe Stock View of Ruby Falls inside Lookout Mountain.Key PointsRuby Falls is an underground waterfall located over 1,000 feet beneath Lookout Mountain in East Tennessee.Travelers visit for the dramatic waterfall reveal, guided cave tours with stunning rock formations, and sweeping views from Lookout Mountain.It's a year-round …