Ripple marks in Silurian sandstone. These ripples in the sand have hardened over time to sandstone. They date from the Silurian period between 443 to 416 million years ago. Photographed in Marloes bay,Wales | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Stammers, Sinclair |
Bildgröße: | 3872 px × 2592 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |