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Aerial view of beautiful natural shapes and textures in lake. Taken via drone.

Morning Glory pool at Yellowstone National Park, Wyoming, USA.

Norris Geyser Basin feature in Yellowstone National Park

Underwater view revealing vibrant green algae and aquatic plants. This serene environment showcases the beauty of nature's ecosystem, perfect for environmental themes.

Beautiful abstract view of Sapphire Pool in Yellowstone National Park

Rippling water flows over textured yellow sediments in a river, creating an intricate natural pattern

Geysers at Black Sand Basin Trail, Yellowstone National Park.

Turbulent water flow of rivers in nature

Closeup of Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA

Image of Macro of Yellowstone spring with colorful alkaline waters

Grand Prismatic Spring in Yellowstone National Park

Geothermal pools in Biscuit Basin, Yellowstone Park. Wyoming, USA

Yellowstone National Park turquoise thermal pool, Wyoming, USA.

Close-up of the earth surface in the Orakei Korako Park, Taupo, North Island, New Zealand, Oceania.Emerald Terrace in the Orakei Korako Geothermal Park, Taupo Volcanic Zone.

Thermophilic Microbial Mat at Norris Geyser Basin in Yellowstone National Park, Wyoming. These olive-green mats are the result of cyanobacteria mixed with iron.

Close-up of the colorful mineral deposits and bacterial mats in the acidic waters of Rio Tinto

Swirl pattern created when paint is mixed with water. Canon 5DMkii Lens EF100mm f/2.8L Macro IS USM ISO 400

Image of Yellowstone detail of hot spring terraces

Black Diamond Pool Geysers at Yellowstone National Park. Biscuit Basin Trail.

Abstract patterns and texture of organic matter and foam floating swirling on the river water surface

An abstract view of a riverbed in an abandoned mining area with mineral and metal deposits in shallow water

Aerial view of different natural shapes and textures on the dried salt lake. Konya, Turkey. Taken by drone.

Mud and layers of salt on the coast of the Dead Sea in Israel

The gold-colored runoff at the Upper Geyser Basin in Yellowstone National Park is typically caused by thermophiles, heat-loving microorganisms that thrive in the hot, mineral-rich waters of the geothermal features. These microorganisms, particularly certain types of bacteria and archaea, produce pigments that give the runoff its striking colors. The gold or yellow color is often attributed to thermophilic bacteria like Thermocrinis or other species that can process sulfur or iron, creating vibrant hues in the runoff channels. These colorful runoffs are a hallmark of the park's geothermal activity.

Grand Prismatic Spring in Yellowstone National Park

Yellowstone National Park, Wyoming, United States: In Yellowstone National Park's Midway Geyser Basin, the bacterial mats around Excelsior Geyser Crater consist of heat-tolerant microbes that flourish within the hot spring's drainage pathways. As the mineral-laden water gradually cools, specialized microbial populations occupy defined thermal ranges, producing vivid stratified bands in hues from orange and brown to green. These colors stem mainly from carotenoids and chlorophyll, which enable the bacteria to manage sunlight and thermal stress. Beyond marking thermal shifts, the mats facilitate nutrient turnover by capturing minerals and organic matter, while their layouts and tones underscore the subtle equilibrium of geothermal energy, aqueous composition, and microbial versatility.

Macro shot of bright cyan-colored crystals contrasting with a dark rocky terrain.

Biscuit Basin Spring in Yellowstone National Park

$Close-up of the earth surface, Waimangu Volcanic Valley, Rotorua, North Island, New Zealand, Oceania.\nClose-up of the earth surface in Waimangu Volcanic Valley.$

Geysers at Midway Geyser Basin Trailhead, Yellowstone National Park.

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