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50.3 MB (50.0 MB compressed)
5742 x 3060 pixels
48.5 x 25.9 cm ⏐ 19.1 x 10.2 in (300dpi)
TONY CRADDOCK / SCIENCE PHOTO LIBRARY TONY CRADDOCK / SCIENCE PHOTO LIBRARY
Coastal defence construction. Precast concrete blocks being lined up along a shore. This type of sea defence is known as rock armour. The piles of concrete dissipate the energy of the waves, reducing coastal erosion. Photographed in Madeira, Portugal.
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