Petrified tree, runoff area of the Grand Prismatic Spring, Midway Geyser Basin, colored thermophilic bacteria, microorganisms, hot springs, Yellowstone National Park, Wyoming, United States of America, USA

america american area areas attraction attractions bacteria basin botany colored conservation day daylight daytime during exterior exteriors famous flora fossil fossilisation fossilised fossilization fossilized fossils geyser grand hot known microorganisms midway national national natural nature nobody north of outdoor park park parks petrified petrified photo photos plant plants preserve preserves prismatic renowned reserve reserves runoff sanctuaries sanctuary seeing shot shots sight sights site sites spring springs states the thermophilic tourist tree trees united us us american usa well well known wildlife worth wyoming yellowstone