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Sint Pietersberg, Maastricht, Marl Caves are underground corridors created by the extraction of marl or limestone | 305477
The marl caves in the Sint Pietersberg..Marl or limestone was already mined in the Middle Ages in underground systems of corridors called marl caves. Over the centuries, a vast system of corridors was created. Due to the daytime mining of marl that started in 1926, about 150 hectares were excavated and many underground corridors disappeared..© 18 april 2019 Aerophoto-Schiphol Aerial Photography
Aerial photography library ID: 305477
Created:
Aerial photography library size: 51.1 Mpixels (146 MB uncompressed) - 8256x6192 pixels (27.5x20.6 in / 69.9x52.4 cm at 300 ppi)
Aerial photography library keywords: aerial photography, ENCI quarry, limestone, marl cave, marl caves, marl extraction, nature, Netherlands, Sint Pietersberg, viewing platform
Published in: Aerostockphoto, the Netherlands
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