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Door To Hell, Turkmenistan

It is natural gas field that collapsed in 1971.  

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Fly Geyser, Nevada

The geyser, only 5 feet tall, was created by well digging in 1964 to explore sources of geothermal energy. 

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Richat Structure, Mauritania

It is an uplift laid bare due to erosion.  

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Eternal Flame Falls,  New York

The small cave at the base of the waterfall emits natural gas that can be lit to produce a small flame.

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Salar de Uyuni, Bolivia

A thin film of water gathers on the salt surface and gives the mirror-like reflecting surface. 

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Reed Flute Cave, Guangxi, China

It is a natural limestone cave with multi-colored lighting. 

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Upper Kanarra Falls, Utah

It is a perfectly multi-hued, twisting-and-turning-slot canyon.  

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Antelope Canyon, Arizona

The slot canyon was formed by erosion of Navajo sandstone due to flash flooding and subaerial processes. 

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Fingal’s Cave, Scotland

It is famous for its natural acoustics .

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Zhangye Danxia Landform, China

The colored mountains were formed due to the natural weathering and erosion of the red sandstone .

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