How deep is the No.8 pit in Tongluoshan Mine Park in Chongqing?

No.8 pit of Tongluoshan Mine Park in Chongqing is 5 1 m deep. According to relevant public information, the No.8 pit in Chongqing Tongluoshan Mine Park is named Xixinhai, with a depth of 5 1 m, a quiet environment and a wide lake. Tongluoshan Mine Park is located in Shichuan Town and Yufeng Town, Yubei, Chongqing, with an altitude of 5 12 to 7 18 meters. This is a typical limestone mining area.