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A yardang in the Algerian desert. A feature caused by wind erosion. The ‘pedestal’ effect is created by wind-blown sand whose cutting force is strongest near ground level.

Wave Rock is a natural rock formation located east of the small town of Hyden in Western Australia. The 'wave' formation was formed 60 million years ago and the shape of the rock is not caused by a wave phenomenon, rather its rounded wave-like shape was formed by subsurface chemical weathering followed by removal of the soft weathered granite by fluvial erosion, thus the weathering occurred below ground level before it was exposed.

Ol Doinyo Lengai, Tanzania. The only active carbonatite volcano in the world. Its lava erupts at only 500 degrees C.

The natural phenomenon of Trovants: stones that literally grow by themselves. Romania may be known as the land of Dracula, but it is also a land where nature has had an interesting activity. Far less known to the world than Dracula, stand an impressive number of stones which quite literally grow by themselves. The stones are real and known as Trovants.Near a village, just south of central Romania a number...

Wind carved stone monument south of Olbia on the east coast of Sardinia

Lightning - Positive and negative ions bouncing around in the atmosphere; When they collide, they create an electrical discharge that we see as lightning; These natural light shows are as hot as the surface of the sun and can destroy anything they hit.

Hale-Bopp Comet seen through the Keyhole Arch at Monument Rocks Natural Landmark, Kansas, USA. Photo: Doug Zubenel.