Unraveling the Stone Age's Mysterious Architectural Plans and Traps.
Archaeologists in Saudi Arabia and Jordan have discovered the oldest known architectural plans, engraved on stone slabs, detailing huge structures used to funnel wild animals such as gazelles into enclosures where whole herds could be slaughtered. The Stone Age hunting traps date back about 9,000 years and are known as kites because of the shape they form. The accurate drawings of the massive kites suggested that the people who built and used the traps had advanced and sophisticated knowledge of perceived space and were able to process complex spatial information.