Morning Glory Pool, Yellowstone national park
Genuine Curteigh-Chicago "C.T. Art-Colortone" Post Card
Morning Glory Pool, Yellowstone Park, filled with pure water, over 200 degrees in temperature never erupts nor even boils - always remaining quiescent like the flower for which it was named. It is 23 feet across and about 29 feet deep: the narrow fissure supplying this hot spring penetrates the Earth to unknown depth.