Pizza Slices, Polaroid Pictures, And Over 300 Hats: What’s Left Behind In Yellowstone’s Hydrothermal Areas?

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Millions of tourists visit the natural jewel every year – and leave quirky garbage behind. Including a cap with the inscription "I pee in the lake"The Yellowstone National Park in Wyoming is not only the oldest national park in the world, but also one of the most visited natural attractions in North America. More than four million people visit the particularly protected area with its hot springs and geysers each year. And not all of them leave t…

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Ah Yellowstone. A place full of mystery which may contain a time bomb in its basement and which is one of the most visited tourist places in the United States. This famous natural park where one can observe an incredible fauna, impressive geysers that betray the volcanic activity of the area and the... hats? Hats that... fly Well, you get it, the mystery only lasted too long. Why 300 hats, and a pizza box, were found by researchers and volunteer…