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

Park staff have collected over 13,000 pieces of trash from the park's hydrothermal areas so far this year.