USA 🇺🇸

Morning Glory Lake – geothermal spring in Wyoming, Yellowstone National Park

The reservoir got its name in honor of the flower "Morning Glow" because of the identical sapphire color.

The popular ritual of tourists – to throw a coin as a keepsake – eventually turned into a real disaster for the lake. The water temperature dropped from 100 ° C to 75-50 ° C, which caused the reproduction of all kinds of bacteria.

Organisms painted the lake in various colors: cyanobacteria living at a water temperature of 73 ° C – yellow, protozoa unicellular (66 ° C) – orange, fungi and algae (60 ° C) – yellow / green, mosses (50 ° C) – brown.