It is the same magnitude than the Great Pyramid BUT using a mountain for most of its volume. It is one thing to create a pyramid as a solid, and something comp

It is the same magnitude than the Great Pyramid BUT using a mountain for most of its volume. It is one thing to create a pyramid as a solid, and something completely different as a "skin" to a mountain. If fact there are pyramids in Egypt that were created as a skin over mountains too. They did not last though as people stole the stones for their houses(leaving just the mountain), like they did with the Great Pyramid too, which had a very beautiful white limestone and granite skin.