ruins of tunnels and walls in the ancient adobe fortress wall of ayaz kala in uzbekistan

adobe ancient antique arch arched architecture art asia ayaz brick brown clay cloud desert east exterior fort fortification fortress heritage historic kala karakalpakstan khorezm kum kyzyl kyzylkum landscape monument mud muddy old outdoor road rubble ruins sand sightseeing silk silkroad tourism travel tunnels unesco uzbekistan wall yellow zoroastrian