Mega Cavern underground bike park in Kentucky

320,000 square feet underground bike park, 45 trails, dual slalom and jump track, tunnels, wooden jumps - and it's 100 feet underground! Built in the former Louisville Crushed Stone Mine, I would love to check this out just for the experience if I'm ever over there, even though my MTB skills aren't the greatest.

http://www.louisvillemegacavern.com/

http://www.ozy.com/good-sht/behold-the-bike-cave/39797

Skye