The Morning Glory thermal pool, a once-pristine, brilliant blue thermal feature in the park's Upper Geyser Basin has been ...
Yellowstone National Park tourists have been blamed for ruining a once pristine, crystal- blue thermal pool by treating it ...
Yellowstone National Park’s famous geothermal pool named Morning Glory has reportedly changed color due to the volume of debris thrown in by visitors. According to park historians and former ...
Abyss Pool in the West Thumb Geyser Basin in Yellowstone National Park is getting hotter and changing colors. Scientists say the pool, where a human ...