Europe’s only underwater mine: more than 300 years old and located in Spain

Europe’s only underwater mine: more than 300 years old and located in Spain

There is a place in the north of Spain whose natural riches go beyond the robust landscapes of green-coloured rocks facing the ocean’s waves. In fact, the intuition of one 16th-century local clergyman led to the exploitation of the mysterious black rock appearing on the cliffs. That was precisely how Spain’s first documented coal mine began.  The Arnao Mine, a  journey through time into the earth Arnao Mine Museum. | Shutterstock  Along the cent…