Morning Glory Pool has long been considered a must-see site in Yellowstone. At one time a road brought visitors to its brink. Over the years they threw coins, bottles and trash in the pool, reducing its flow and causing the red and orange bacteria to creep in from its edge, replacing the blue bacteria that thrive in the hotter water at the center of the pool. The pool is now accessed only by a foot path. Upper Geyser Basin. Yellowstone National Park, Wyoming, USA
Location: Upper Geyser Basin
, Yellowstone National Park
Image ID: 13354
Format: Digital 3:2
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