Fly Geyser: A Neon-Colored Wonder in the Black Rock Desert
- Mike Powers
- Nov 26
- 3 min read
The Fly Geyser in Nevada’s Black Rock Desert is one of the most unusual natural features in the American West. Unlike typical geysers formed by natural volcanic activity, this geyser came into existence by accident. When a well drilled in 1964 struck a geothermal pocket, it released hot water that began to build a strange, colorful formation. Over time, minerals and algae created a psychedelic, neon-colored structure that continuously sprays hot water. This post explores the origins, appearance, and significance of Fly Geyser, offering a glimpse into this alien-like spectacle.

How Fly Geyser Came to Be
Fly Geyser is not a natural geyser in the traditional sense. It formed after a geothermal well was drilled in 1964 by a rancher searching for irrigation water. Instead of finding a steady water source, the well tapped into a geothermal pocket beneath the surface. This caused hot water to shoot up continuously, carrying dissolved minerals with it.
As the water cooled on the surface, minerals like calcium carbonate and silica began to deposit around the vent. Over decades, these deposits built up into terraces and cones. Meanwhile, thermophilic algae—organisms that thrive in hot environments—colonized the mineral deposits. The algae’s pigments give the geyser its striking neon colors, ranging from bright green to deep red.
The geyser is still active today, spraying hot water 24 hours a day. Its growth continues slowly but steadily, making it a living, changing formation.
What Makes Fly Geyser Unique
Fly Geyser stands out for several reasons:
Artificial origin: Unlike Yellowstone’s famous geysers, Fly Geyser was created by human activity, though it now functions like a natural geothermal feature.
Vivid colors: The combination of mineral deposits and algae creates a palette of neon greens, reds, and yellows that look almost otherworldly.
Continuous activity: The geyser sprays hot water constantly, creating a mist that enhances its surreal appearance.
Remote location: Situated in the Black Rock Desert, the geyser is far from urban centers, adding to its mystique and appeal for adventurous travelers.
The geyser’s alien look has made it a popular subject for photographers and nature enthusiasts. Its colors and shapes change with the light and seasons, offering a different experience with every visit.
Visiting Fly Geyser
Fly Geyser is located on private land, so visitors should plan accordingly. Access is usually arranged through guided tours that respect the fragile environment and the landowner’s rules. Here are some tips for those interested in seeing this neon wonder:
Book a guided tour: Local tour companies provide transportation and information about the geyser and surrounding desert.
Wear sturdy shoes: The terrain around the geyser can be uneven and rocky.
Bring water and sun protection: The desert environment is dry and sunny, so prepare accordingly.
Respect the environment: Stay on designated paths and avoid touching the geyser to preserve its delicate formations.
Visit during daylight: The geyser’s colors are best seen in natural light, especially in the morning or late afternoon.
Fly Geyser is part of a larger geothermal area with hot springs and mud pots nearby, making it a fascinating destination for those interested in geology and natural wonders.

The Science Behind the Colors
The neon colors of Fly Geyser come from a mix of minerals and living organisms:
Minerals: Calcium carbonate and silica form the white and cream-colored base of the terraces.
Algae and bacteria: Thermophilic algae thrive in the hot water, producing pigments that range from green to red. These pigments protect the algae from intense sunlight and heat.
Temperature gradients: Different colors appear at various temperatures, creating bands of color on the terraces.
This combination creates a natural palette that looks almost painted. The colors shift with the seasons and water flow, making Fly Geyser a dynamic and ever-changing spectacle.
Why Fly Geyser Matters
Fly Geyser is more than just a colorful oddity. It highlights how human activity can unintentionally create new natural features. It also draws attention to geothermal energy and the unique ecosystems that develop around hot springs.
For travelers, it offers a rare chance to see a living geological formation that looks like it belongs on another planet. Its location in the Black Rock Desert also connects it to a broader landscape known for its stark beauty and extreme conditions.

Fly Geyser invites curiosity and respect. It reminds us that nature and human activity can combine in unexpected ways, producing wonders that challenge our ideas of what is natural.



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