part of the bastion of an ancient castle. powerful fortification in the middle of the castle. high ancient walls in the castle.

ancient arc arcade arch arched architecture archway barrier brick building castle caution cave cement cobble cobblestone construction corridor dark darkness dirty dungeon entrance fort gray history inside interior lane light medieval mystery old roman rome ruins shadow smolensk stair stairway step steps stone tower tunnel underground urban wall window bastion castle powerful fortification middle high walls brickwork