Literally enter the “inside of the earth” and discover the underworld left by our recent ancestors, in the explorations for tungsten, tin and even gold. Tungsten is a metal widely used in military weapons, especially during the Second World War. Find out about the mode of exploration, the applications, but also the socio-economic notes and the influence that these concessions had on the development of the region. Take the opportunity to get to know Paiva Valley better, on our Jeep Tour to the explorations and, at the end, on the return to your vehicle.