Buried deep underneath Lookout Mountain, Ruby Falls is a subterranean waterfall that is well worth the visit when in Chattanooga, Tennessee. After taking an elevator down to the cave level, the guided tour takes you past a variety of interesting geological formations on your way to the showpiece of the tour, which is then bathed in various hues for a few minutes. Fun stop for the whole family. This picture was taken while I was leading a Tennessee Christmas Walking Adventure in 2012.
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