5 Unexplained Mysteries + Legends About U.S. National Parks
Have you heard of these?
5 Unexplained Mysteries and Legends 01:54
Delve into the mysteries and legends found in America's national parks.
Hidden treasure in Yellowstone? A ghost in Yosemite? UFOs in the North Cascades National Park? America's national parks hold many secrets. Watch the video above to learn about five most popular mysteries and legends.
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