Locally known as the "Blue Lagoon," a quarry pool in Derbyshire, England, has been dyed black to deter people from swimming in its beautiful but toxic waters.
Despite its pH of 11.3, the litter of dead animals and other garbage on its banks, and the fact that it is almost equivalent to swimming in bleach, people still flock to the Blue Lagoon, tempted by its turquoise water.
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So the local council decided to dye it black to make it more aesthetically unattractive.
Before:
And after:
"It has similar pH levels to bleach and is extremely cold," a High Peak Borough Council spokeswoman told The Telegraph. "There are also a number of hazards — there was a car abandoned in there and all sorts of rubbish, but it still looked a lovely turquoise color.
"We are trying to find ways of discouraging people from finding it attractive. There is already some anecdotal evidence that this is working as residents said that over the weekend people were coming up as they normally do to swim and then very quickly turning around again when they saw the water."
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