Pinterest • The world’s catalog of images

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.

Derweze, also known as the "Door to Hell", is a 70 meter wide hole in the middle of the Karakum desert in Turkmenistan.

Located on the western edge of the Sahara desert at central Mauritania in NW Africa, there is a giant quartzite circle called Richat Structure. The diameter is approx. 38km.