A stunning video captured the bright blue water inside an abandoned mine in southern China's Wuhu on November 16, 2018.<br /><br />The incredible clip shows the water inside a mine which has been abandoned for more than 30 years turning dark blue.<br /><br />Due to the limestone reaction and the geology, the water is highly alkaline and turned dark blue.<br /><br />The blue lake attracted a large number of tourists. But the local authority appealed people to not go there as the water is seriously polluted and the landform is very complex.
