這是一個很深的坑，海拔-87米，位於松江區天馬山旁邊。很久以前應該是個採石場之類的地方吧，裏面沒有排水設施，所以兩年前還是一個湖，現在要在裏面造瀑布和酒店，於是把水抽乾了~~

This is a very deep pit, the depth is 87m. It’s located by Tianma mountain, Songjiang district. Maybe it’s kind of a quarry long ago. For there’s no drainage there, it’s been a lake for a long time. Recently they pump the water out to build a 5-star hotel in it.

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Shanghai Tours, Songjiang