Earth pillars. Pillars of soft,sedimentary rock topped by flat caps of harder rock. Earth pillars,or hoodoos,are formed due to the presence of large pieces of hard rock in semi-arid regions of sedimentary rock that experience occasional heavy downpours. The rain weathers away unprotected material leaving behind columns of rock under hard caps. Photographed near Drumheller in Alberta,Canada | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Nunuk, David |
Taille de l’image : | 3670 px × 2480 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |