During World War II Adolf Hitler sent his people on the top of the Zillertaler mountains to build up a grove to get Molybdän. Molybdän is a very solid metal used to build panzer and weaponry. They spent a huge amount of money and manpower. At the end they did not found any Molybdän at all.
Wald magazine assigned me to walk 3.000 altitude difference meters and to take pictures of what they left. Published in Wald #3.