CNN:
The wooden structure has no real parallel in the archaeological record, according to the study.
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Researchers aren’t certain which species of ancient human made the structure and wooden tools, but it is highly unlikely to have been our own. The earliest known Homo sapiens fossils date from around 300,000 years ago
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the complexity of the structure suggests the people who made it were cognitively sophisticated and were able to make and execute a complex plan — something that likely required the use of language.