Credit: Abouarab et al/Acta Geophysica
NEED TO KNOW
Scientists used satellite radar technology to find a massive 2,600-year-old structure buried beneath the ancient Egyptian city of Buto, in the Nile Delta
The complex, part of the archaeological site at what's now Tell el-Fara'in, measures 420 feet long and 203 feet wide, making it larger than a football field
Researchers were surprised to find a thick layer of clean sand, which they believed may have been laid to stabilize the structure against the Nile Delta's clay, further underground
