Fun fact about Machu Picchu. This ancient Incan city was unknown to the outside world until 1911, when it was discovered by explorer Hiram Bingham. #AncientCities #IncanEmpire #xplrnow Image Credit:@intoperu on instagram

Incan numerical recordkeeping system may have been widely used https://arstechni.ca/k7YK #Pre-Columbiancivilizations #indigenoussouthamerica #ancientpeopledidstuff #indigenouscommunities #indigenousamericans #anthropology #Archaeology #Incanempire #Science #science #khipu #inca #wari