Pinterest Facebook Twitter Email Artifacts and Caves 00:29 Josh goes to extraordinary depths to investigate mysterious metal tablets. From: Hunt for the Metal Library and Expedition Unknown Related Videos Alien Artifact 02:21 Artifacts in Disarray 00:36 Historic American Artifact? 03:06 Aaron's Vlog: Artifacts 00:49 Stanford Prison Artifact 02:53 Bat Cave 00:35 Roswell Cave 00:17 Cannibal Caves 03:47 More Videos Cave Findings 01:28 Cave Encounters 00:35 Sulawesi Cave 00:40 Shanghai's Bathroom Cave 01:57 Alaskan Ice Caves 00:43 Mysterious Backyard Cave 00:36 Recap: Hellfire Caves 05:09 Wild Cave Tours 03:45 Mendenhall Ice Caves 00:44 New Mexico's Ice Cave 02:34 Lemp Brewery Caves Preview 01:52 The Caves of Kentucky 02:34 Recap: Bell Witch Cave 05:47 The Hell Fire Caves 02:41 Caving for King Arthur 03:31 Wind Cave National Park 02:50 We Recommend New Seven Wonders of the World Nude Beaches: Take It All Off! Camping Tips and Tricks 10 Photos 15 of the Strangest Animals in the World and Where to See Them 15 Photos 50 States of National Parks: One for Each State (and DC, Too!) 51 Photos What to See and Where to Eat in Charleston, S.C.