Here you can clearly see that the builders used different styles to camouflage the casemates. Opera 20 is located east of Resia. It had to cover the other works, preventing infiltrations, but also attack at the eastern slope. The work is located near the source of the river Adige. In fact one of the two sources is used to supply the work with water.

For more photos of the Vallo Alpino at Resia visit www.vecio.it.