Photo of the Day: The edge of the Morning Glory Pool at YellowstoneNPS. This pool's astounding color comes from the thermophilic bacteria within. But decades of vandals throwing objects into the pool have ruined its colors and given it a new nickname—"Fading Glory." . . . #POTD #photooftheday #picoftheday #morningglorypool #yellowstone #NPS #myNPS #NPS100 #morningglory #geiser #nature #naturephotography