“We found tons, probably thousands of coins,” former Yellowstone ranger Jeff Henry told Wyoming news outlet Cowboy State Daily. “The main park road used to go right by Morning Glory, so that would account for some of the metal parts that looked like car parts chucked into the bottom of the pool.”

In the 1970s, rangers realized the depth of the problem at the Morning Glory Pool and decided to clean it out. They partially drained the hot spring of water and dredged as much debris as possible, revealing a wealth of coins that had presumably been flicked in there for “good luck”.