Oil pump. This is a 'nodding donkey',a type of pump used where there is not enough natural pressure to force oil out of a well by itself. Photographed at Allermoehe,near Hamburg,Germany | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Bildagentur-online / Ohde |
Bildgröße: | 5117 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |