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.

Tourists have been blamed for ruining the beautiful blue colour of a hot spring in Yellowstone National Park in Wyoming by throwing coins and other objects into the water.Morning Glory Pool, located in the Yellowstone Upper Geyser Basin in the United States,

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

Glory Pool — perched near the famous “Old Faithful” geyser — was for years a must-see attraction in the Upper Geyser Basin in Yellowstone National Park, according to Cowboy State