Recent investigations have revealed a lot of new information about the Great Pyramid, including what appears to be a secret passage. LIKE BOING BOING BUT NOT THE ADS? CLICK HERE TO GO AD-FREE!

When Yukinori Kawae explores the Great Pyramids at Giza ... Last year an archaeologist studying laser scans found hints of hidden chambers in King Tut’s tomb. In February a class at Harvard ...

Many structural integrity secrets help pyramids stay stable. The pyramid’s weight is spread out, keeping it solid. This is key, given the Great Pyramid’s 2.3 million blocks, each weighing a lot.