chalk quarry. large white stones. deposits of Cretaceous rocks. Production of chalk. Open pit chalk rocks. Industrial production of chalk and clay mining. Open pit mine digging for minerals
ID: 1177208506
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- 大图:5472 × 3648 像素·46.33 cm × 30.89 cm·300dpi·JPG
- 中图:1000 × 667 像素·35.28 cm × 23.53 cm·72dpi·JPG
- 小图:500 × 334 像素·17.64 cm × 11.78 cm·72dpi·JPG