We operate a demonstration of Czechoslovak fortifications from the 1930s. You will find bunkers, foundations of buildings and expositions. The museum complex consists of two light fortification objects pattern 37 built in the III Army Corps within the section 16 - Moravský Krumlov in 1938.

Almost a kilometre of mutually perpendicular passages cut in the rock below Petrov. The system of vaulted passages, located in a rectangular area approximately 85 x 60 metres, provided shelter for up to three thousand people for four days in the event of an atomic explosion.