A boulder of Millstone Grit on Ilkley moor with a perfect circular hole probably formed by a large inclusion hat has weathered out of the bedrock | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Cooper, Ashley |
Bildgröße: | 5173 px × 3449 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |