Concrete blocks manufactured and used in the Netherlands in the construction and reinforcement of coastal dykes and other marine engineering. The blocks have polyhedral forms in the size of large boulders, weighing up to 300 kg. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5616 px × 3744 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |