Valley in Jordan inhabited and irrigated for 13,000 years

You can make major discoveries by walking across a field and picking up every loose item you find. Dutch researcher Eva Kaptijn succeeded in discovering - based on 100,000 finds - that the Zerqa Valley in Jordan had been successively inhabited and irrigated for more than 13,000 years. But it was not just communities that built irrigation systems: the irrigation systems also built communities.

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