KEK-KEK-KEK
I sent you information on the underground under the pyramids in Egypt. It was shown by ground penetrating radar that they went from the "Bird Crypt" all the way under Pyramids with entrances in the phenix under the nile to Babylon. That was the Roman towers that the coptic church was build on.
https://www.pbs.org/video/babylon-roman-fortress-jfrrhw/