Because humans have almost never gone there for 60 years, th 2 5, 9:08pm

@AussiePengwin Uh, while Chernobyl is true, Yellowstone is completely different. Yellowstone is a federally protected national park, meaning because of human action the wildlife won't go extinct, because no one is allowed to hunt or build on it without permission, which you can almost never get, so it is more accurate to say you can NEVER do anything to harm it. Then again, building on top of the largest volcano on the continent & one of the single largest volcanoes in the world is probably not the best idea... https://en.wikipedia.org/wiki/Yellowstone_Caldera