This video playlist is based on the books of the channeling of Ra which took place between 1981 to 1984. It is the same Ra that influenced the ancient Egyptians and he does talk about the building of the pyramids and their function and many other things. https://www.youtube.com/watch?v=Sm13CP4esHE&list=PLrxrYaHqJiBYpvbLUa3KJCR4IP7GCHw9L&index=2