Editorial photo #9450480 Human Interest
Abandoned Copper Mine
An aerial view of an abandoned copper mine near to the village of Tsar Asen some 160 kms (100 miles) east of the Bulgarian capital Sofia at an elevation of around 300m above sea level. The mine is a popular attraction, particularly with photographers, thanks to the unusual green color of the water. The color of the water is due to the huge amounts of metal copper in it .Dozens of other chemical elements there are in water also, which makes it very dangerous and deadly. (Photo by Petar Petrov/Sky Pictures Bulgaria/NurPhoto)