The tradition of throwing things into the pool dates back to 1872, when the park first opened, according to Yellowstone National Park historian Alica Murphy. She claimed that tourists have always been known for throwing objects into the pool, hoping for either good luck or to prompt a geothermic event.

Once a brilliant blue, the famous pool's color has changed after decades of damage by the national park's visitors.

Shutterstock Photo While tourists bring a lot of funds to Yellowstone Park, they also bring a lot of damage. Carelessness and ignorance can often have long-lasting negative effects on the planet, and that appears to be the case here.

Glory hot spring lost it's natural beauty due to years of visitors treating the body of water like a wishing well, throwing coins, trash and anything else they wanted to discard into it