Brown Experience: The Mine

Right in the heart of Madrid lies a subterranean mine built during the Spanish Civil War as a potential evacuation route, as it was connected to several iconic buildings throughout the city.

As the war progressed, the mine was sealed off — and has remained untouched ever since. Many have tried to uncover the secrets it holds. It is said to contain numerous chambers filled with minerals, but one in particular stands out — a never-before-seen mineral hidden deep within its depths.

You, brave miner, have managed to contact a relative of one of the former foremen who once oversaw the mine's operation. With the original blueprints in hand, you've arranged to meet at the entrance of The Mine to begin your mission. But there's one condition: whatever you find down there must be shared among you all.