uplistsikhe cave complex with a 9th/10th century three-nave basilica, uplistsikhe, georgia

9th10th abandoned ancient antique archaeology archeology architecture asia basilica blue building caucasian caucasus cave century christian church city civilization complex culture eastern europe famous fortress georgia georgian gori heritage hill historic historical history landmark landscape mountain nature old outdoor region religion religious rock ruin sky stone temple threenave tourism town travel unesco uplistsikhe