150-Foot-Long Natural Waterslide in California Looks EPIC | Only Runs 3 Weeks Per Year Well, this place looks unreal… Where is this spot? If we had to guess, it’s in the grand canyon of the Tuolumne in Yosemite National Park, but that’s just a guess. “Deep into the Sierra Nevada mountain range lies a hidden gem of a water slide. This 150 foot long beauty is only possible to slide 3 weeks out […] Raft Riverbrains | August 16, 2017 8 Comments