Weekly Photo Challenge: Colorful

For those who want to know what the heck that is…in context:

4 thoughts on “Weekly Photo Challenge: Colorful

    1. There are hundreds of pools, with new ones breaking through the crust all the time. You have to have a strong stomach for the smell of sulfur (a bit like rotten eggs). You definitely would not want to fall in!

    1. It’s one of the pools of boiling hot water in the Yellowstone Caldera (extinct volcano), where the water thins out and cools, algae lives: different colors live at different heat tolerances. This one lives at electric orange!

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