Tunnels Under Pyramids - Not Just Egypt
Pyramids around the world have interesting measurements and angles making sure that ancient wisdom can be passed to future civilizations who analyze their monuments. We expect to find hidden chambers in Egyptian pyramids - and many expect to find an ancient "Hall of Records" from before the last pole shift - from survivors of Atlantis - in Giza.
Pyramids in Mexico are very similar; massive in scale, incorporating "pi" and other knowledge, aligned to the previous North Pole, with intriguing stories about Aztlan - the ancient island homeland of their ancestors - destroyed in an ancient catastrophe...
And new tunnel systems have been discovered under the Aztec Pyramid of the Moon:
[youtube https://www.youtube.com/watch?v=pbCb1IY9fes&w=893&h=502]