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This alien-looking geyser on the edge of Black Rock Desert was made by humans—by accident.

There are actually two geysers on the property. The first was created nearly 100 years ago as part of an effort to make a part of the desert usable for farming. A well was drilled and geothermal boiling water (200 degrees Fahrenheit) was hit. Obviously not suitable for irrigation water, this geyser was left alone and a 10- to 12-foot calcium carbonate cone formed.

In 1964 a geothermic energy company drilled a test well at the same site. The water they struck was that same 200 degrees—hot, but not hot enough for their purposes. The well was supposedly resealed, but apparently it did not hold. The new geyser, a few hundred feet north of the original, robbed the first of its water pressure and the cone now lies dry.

This second geyser, known as Fly Geyser, has grown substantially in the last 40 years as minerals from the geothermal water pocket deposit on the desert surface. Because there are multiple geyser spouts, this geyser has not created a cone as large as the first, but an ever growing alien-looking mound. The geyser is covered with thermophilic algae, which flourishes in moist, hot environments, resulting in the multiple hues of green and red that add to its out-of-this-world appearance.

More on Fly Geyser can be found on Atlas Obscura.

Water, water, everywhere:

• Every fall, Canada's Medicine Lake mysteriously drains, like a bathtub with the plug pulled out
• A strange geological landscape known as Pancake Rocks erupts with sudden bursts of water
• The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls

More on Fly Geyser can be found on Atlas Obscura.