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

Glory Pool near Old Faithful was once one of the most beautiful thermal pools in Yellowstone National Park. It was a brilliant clear blue,

Tourists have ruined one of Yellowstone’s most gorgeous thermal pools — turning its once pristine blue waters into a mishmash of colors because of years of accumulated coins and trash, officials said.

Glory Pool is a famous tourist attraction in Yellowstone National Park and has turned multi-coloured from pristine blue

A stunning feature of Yellowstone National Park has fallen 'victim to vandalism' - and concerned locals are pointing their fingers at tourists.