Historical landmarks on coal mining sites.

If there is one region on the S-shaped strip of land that is both rich in resources and steeped in glorious history, it is Quang Ninh . This mining region is not only the cradle of Vietnam's coal industry, but also a witness to countless ups and downs, losses and victories. Here, the coal mines are not only places where the nation's black gold is extracted, but also historical landmarks, where names are etched, reflecting the indomitable spirit, discipline, and unity of the miners.
Source: https://baoquangninh.vn/dau-an-lich-su-tren-nhung-cong-truong-khai-thac-than-3352479.html