Unique conditions appear to have preserved part of an ancient wooden structure dating back at least 476,000 years. This time was well before the presumed evolution of modern humans, upsetting old notions of hominid development.
No one knows what the structure was, only that it appears to have been fashioned with stone tools to fit together in an interlinking fashion similar to Lincoln Logs. The scientific team led by archaeologist Larry Barham found a single such connection composed of a longer, blackened log and a smaller one with a carved notch.
