We don’t know what to do with the old coal mines. Switzerland’s idea is to turn them into a giant “battery”
In the bowels of the Bierzo region of León, where coal was the absolute king for decades, the silence of the abandoned and flooded galleries is about to be broken. But this time there will be no pickaxes, no minecarts, no black ore. The new gold of the mining basin is water, and those in … Read more