pyramid akapana at ancient tiwanaku ruins, bolivia

akapana altiplano america american ancient andes archaeological archaeology archeology architectural architecture area art block bolivia bolivian building castle civilization clouds collapse column complex construction cultural culture destination discovery earth engineering era excavations exploration floor heritage historic history inca incas indian large material megalith megalithic monument mysterious mystery old part place precolombian pyramid ruin ruins sand sky south stage stairs statue steps stone storey sun sunny temple tiwanaco tiwanaku tourism touristic traditional travel trip unesco walls