The dolerite cliffs of Alkefjellet, Spitsbergen, Svalbard, are home to tens of thousands of seabirds, mainly guillemots. They nest in the cliffs, safe from foxes and polar bears. The dark dolerite rock is a sill, a mass of molten magma that intruded between layers of limestone from the carboniferous period. The light-coloured limestone is visible on the bottom right and, above the dolerite, on top of the rounded hill on the far right. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Alean, Dr. Juerg |
Bildgröße: | 5760 px × 3840 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |