The extensive volcanic history of this region in Central Oregon is evident in these well defined layers of volcanic material laid down by successive eruptive events. Most of these occurred in the last million years. This formation is at Lake Billy Chinook. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Foster, John R. |
Taille de l’image : | 5472 px × 3648 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |