Travel + Leisure on MSN

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

Ruby Falls is an underground waterfall located over 1,000 feet beneath Lookout Mountain in East Tennessee. Travelers visit ...
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Discover Salt Creek Falls, Oregon's second-highest waterfall

LANE COUNTY, Ore. — Tucked away in the Willamette National Forest, just off Highway 58, there's a natural wonder you don't want to miss: Salt Creek Falls. At 286 feet, it's Oregon's second-highest ...