The largest underground waterfall in North America, Ruby Falls. Located in Chattanooga, TN. [OC] [4608x3072] via /r/EarthPorn http://bit.ly/2F0jPTo
via Tumblr http://bit.ly/2K7MnOC
The largest underground waterfall in North America, Ruby Falls. Located in Chattanooga, TN. [OC] [4608x3072] via /r/EarthPorn http://bit.ly/2F0jPTo
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