light at the end of the tunnel - the underground of the silver mountain fortress

darkness light symmetry night art arch tunnel painting infrastructure lighting screenshot photograph wall black circle reflection snapshot window end underground silver mountain fortress construction modern fortifications europe visit living museum boredom tour route leads bomb-proof interiors last defense building donjon subsequent rooms learn secrets defend use artillery powder weapons reconstructed soldiers#39aph39# room kitchen greatest water craftsmanship europe hardships everyday life fortress after passing stand deepest moat floors hospital self-sufficient guide dressed historical fortress#39aph39#s garrison culmination shot flintlock gun cannon