Longyou caves — four farmers drained a 'bottomless pond' in 1992 and found this

Zhejiang, China, near Shiyan Beicun village. June 1992. Villagers had these ponds they thought were natural and bottomless. Four of them pooled money to buy pumps and drain one to catch the fish. Took 17 days. Water gone, and underneath is a giant man-carved cavern. Then they find 23 MORE next to it……