stone walls uncovered by archaeologists at the puma punku, a unesco world heritage site. tiwanaku, bolivia

altiplano ancient andean andes archaeological archaeology architecture block bolivia bolivian carving chaskana civilization complex construction culture department design door excavation granite heritage history inca landscape megalith outdoors preinca puma rock sculpture site slab statue stone stonework symbol tiahuanacu tiahuancu tiawanaku tiwanaku tourism travel unesco world