Christopher Davis, University of Illinois at Chicago.
Painel do Pilo is an archaeological rock art site among the Serra da Paituna Mountains near the city of Monte Alegre, along the Amazon River in Brazil. It is just one of many sites with ancient red-painted images in a region dated by archaeological excavations to be as early as 11,200 to 10,500 years before the present era, at the end of the last Ice Age. However, this location has more than just anthropomorphic images, handprints, and spiral designs. The main attraction here is a large rectangular grid with categorical marks potentially depicting phases of the moon. A sky-marker perched at a summit above the panel provides further evidence to support this theory. The reference marker is in the shape of a hitching post that acts as a window to ìcaptureî celestial objects as they move across the sky at a particular time, location, and day of the year.