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. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Foster, John R. |
Bildgröße: | 5472 px × 3648 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |