Scientists have discovered a long-buried branch of the Nile river that once flowed alongside more than 30 pyramids in Egypt, potentially solving the mystery of how ancient Egyptians transported the massive stone blocks to build the famous monuments. The newly found Ahramat branch was essential in building 31 pyramids, including the Great Pyramid of Giza. Purpose-built boats were used to transport the huge stones. ^{sciencealert.com}+2 ^{1 2 3}