A large,spherical sandstone concretion known as a cannonball,in Theodore Roosevelt National Park,North Dakota | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Newman, Mark |
Taille de l’image : | 5103 px × 3407 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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