The Embarrassing History of Crap Thrown Into Yellowstone’s Geysers

When it comes to geothermal features, Yellowstone National Park holds an embarrassment of riches. Located largely inside the massive caldera of an ancient volcano, the park is home to thousands of geysers and hot springs, including Old Faithful and the Grand Prismatic Spring. But of course humans just can’t have nice things, and pretty much ever since Yellowstone’s one-of-a-kind geysers and pools were first discovered, people have been throwing shit into them.