Scientists believe they found the ancient tool that shaped Egypt’s hardest stone, and it wasn’t what anyone expected. For decades, experts have puzzled over how the Egyptians carved granite with such precision using supposed copper tools, which should have been far too soft.

The Great Pyramid of Giza contains a granite sarcophagus that appears inconsistent with the tool technology generally attributed to ancient Egypt. The builders had access to copper, but copper is too soft to cut quartz embedded in granite. Yet the sarcophagus shows straight cuts and precisely drilled holes, with stone cores bearing spiral rings left by a rotating tool.Researchers have spent more t…

Graham Hancock may have been right about the Egyptians’ granite-cutting all along. For decades, the author was dismissed for questioning how the Great Pyramid’s massive blocks were worked with copper tools.

The granite inside the Great Pyramid has been a recurring point of debate for decades. The King’s Chamber is built entirely from massive granite blocks, and for years, author Graham Hancock has pointed to those same stones and asked how they were worked with the tools that standard archaeology attributes to ancient Egypt. For a long time, the academic response was dismissal. His ideas were describ…