Bunkers in the landscape

The project deals with the usege of the defense line of the Orlické hory - specifically the object of fortifications - model 37 type A. These bunkers are still empty, nature is gradually absorbed by them and people do not perceive them. Are they waiting for removal and oblivion, or can they be used today? I would like to believe it ... This project works with a 115 km long route that runs along the defensive line in the Orlické hory...