One known Inca method for cutting through rock without iron was rather ingenious, in that it required comparatively limited physical exertion. Rather than hacking at the stone with large tools ...

The Inca Road was built by engineers and laborers working with bronze and stone tools and llamas. At the height of the Inca Empire, it integrated nearly ten million people from a hundred nations.

But as an experimental archaeologist with over a decade of experience studying and manufacturing stone tools, I can say that there are telltale signs that a rock has been modified by humans or our ...

When Japanese scientists wanted to learn more about how ground stone tools dating back to the Early Upper Paleolithic might have been used, they decided to build their own replicas of adzes ...

Remarkably, the Inca managed to forge this vast society without the wheel, the arch, money, iron or steel tools, draft animals ... lined valleys with immaculate stone paths and carved spiral ...

Scientists have unearthed more than 300 stone tools at the Nyayanga site in southwestern Kenya (pictured in 2014, prior to excavation). Photograph by T.W. Plummer, Homa Peninsula Paleoanthropology ...

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In a cave overlooking the ocean on the southern coast of South Africa, archaeologists discovered thousands of stone tools, created by ancient humans roughly 20,000 years ago. By examining tiny ...