JGF-Yellowstone NP-Upper Geyser Basin-US-WY-6853.jpg


The Firehole River as it flows through the Upper Geyser Basin of Yellowstone National Park in Wyoming, USA. Thermophilic microbes make colorful mats in the runoff of hot water from thermal srpings.
Jon G. Fuller, Jr. 7009x4675 / 26.7MB