Cladking is right and he knew all along....

[cladking]

I wonder how deep the "foundation" goes or if it's built on a pile of well placed stones. I imagine it has to be deep.

G2 has some foundation stones on the SE corner because it was too low here but G1 (the Great Pyramid) was built on a low rise that was sculpted to receive the pyramid.  In the middle of this low rise was an existing fissure that has filled up with a pebbly marl over centuries. 

I believe there was also a temple near this point and just to the north was a massif that was carved into a mongoose which we mistranslate as "lynx".  It was called the Mafdet "Lynx".  It is represented as a cat-like creature on a "scepter". 

Nothing is really known about what's under here but Egyptologists imagine it was a pyramid shaped mountain  that was wholly devoid of any structure of any sort.  Of course this simply dismisses the scant evidence that does exist.  It also ignore the simple fact that these pyramids were built on a finely crafted and perfectly level limestone pavement that was surrounded by a coffer dam at least 26' high.  This pavement was so fine that it was watertight.  Indeed, it would hold as much as about 100 acre feet of water.   That it did hold water is known because there is water erosion in canals leading from it to the cliff face.  There is other evidence that shows counterweights were loaded with water at the top of the cliff face and these were used to lift stones up the east side of the south face of the pyramid one step at a time.  There is a surprising amount of physical evidence for how they were built but no one before ever had the key to put it all together. 

The key is the Pyramid Texts which is just the rituals read to the crowds at the kings' funerals.  And the key to understanding it is solving each word in context using logic and  modern science.  Once you assume the PT has no meaning you can't discover the meaning because Ancient Language is so alien to the way Egyptologists talk and think.  The authors didn't even experience "thinking"!!!!! They had no words to suggest thought or anything related to thinking.  The concept of "belief" is wholly alien to all known life except modern man.