fort hospiz st. gotthard pass armeebezeichnung «hospizwerk san gottardo» b 9477 or forte ospizio san gottardo in the swiss alps

9477 abandoned airolo alps architecture armeebezeichnung army atomic base basement building bunker bunkers canton cellar concrete construction corridor creepy defense defensive demolished destroyed empty europe fort forte fortification fortress gate gottardo gotthard hidden historic history hospiz hospizwerk house landmark landscape massive military nature old ospizio outdoor pass protection rock san scenic schweiz secret security shelter stone storage stronghold structure swiss switzerland tessin ticino travel tunnel underground wall war