uc kumbetler three kumbets historical tombs in erzurum, turkey

12th aisa anatolia ancient architecture artifacts artwork building carvings castle cave century conical culture destination east emir empire erzurum faith famous forts hasankale historical history karayazaplusmn kumbet kumbetler kumbets landmark mausoleum monument muslim nature old oltu ottoman place saltuk seljuk sightseeing sky snow state stone summer three tomb tombs tourism tourist travel turkey vaults winter