Devil's Tower. View of Devil's tower,a basalt outcrop in Wyoming,USA. This massive rocky tower rises almost 300 metres above a plain. It was formed by the cooling of a plug of underground magma (molten rock) produced by a volcano around 60 million years ago. Erosion of the softer surrounding soil and rock over the centuries slowly exposed the hard rock,causing it to project above the surface | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Craddock, Tony |
Taille de l’image : | 5101 px × 3543 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |