Pinterest Facebook Twitter Email Sliding Stones 01:56 Scientists are baffled by a set of stones that seem to move on their own. From: Don Wildman, Monumental Mysteries and Ellis Island, Sailing Stones, Alamo Treasure Similar Topics: History Travel's Best National Parks Related Videos Custer State Park 01:40 Mt. Rushmore National Memorial 02:23 Mt. Rushmore Maintenance 02:40 The Black Hills and Deadwood 01:31 Black Hills & Native Americans 02:09 Fireworks at Mt. Rushmore 01:52 Rescue from Devils Tower 03:25 Wind Cave National Park 02:50 More Videos Crazy Horse Memorial 02:09 Massive Flood Damages Yosemite 02:09 Yosemite's Marijuana Problem 01:40 The Freakiest Fish of All 02:46 Catch the Spirit of Yosemite 03:09 Ghostly Tales from the Parks 02:02 Rock Breaks Climber's Back 02:16 Epic Manhunt in Grand Canyon 02:10 Marilyn's Missing Diary 02:10 Rock Climber's Mecca 01:24 The Kissing Sailor 03:07 Reckless Tank Driver 03:10 The Grand Canyon South Rim 02:28 Red Rock Canyon 02:46 Wai'anapanapa State Park 02:42 High Line Park 02:21 We Recommend Yosemite's 13 Must-See Attractions 13 Photos America's Best RV Parks Where to Travel in June Top 10 Natural Wonders 10 Photos 10 Best Luxe Hotels Near the Grand Canyon Disappearing Places 16 Photos
