For as long as humans have been using tools, there is evidence of engraving whether as a method of recording and communication or simply for decoration. In the 1890s, Eugene Dubois made an astonishing discovery on the banks of the Solo River, Java, Indonesia, excavating a site which was littered with the bones of early humans, animal remains and shells. The bones belonged to our ancestor, homo erectus, and were dated to between 700,000 and 1 million years ago. Dubois also collected a number of the shells which carved the way for a more recent, surprising discovery.
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