This is the place where VIRACOCHA created the nations of the world and organized everyone into families and tribes and locations.
He did this by writing all the instructions down on a vast piece of stone which he then commanded his servants to carry out.
This was no easily task as apparently reading had not been invented at the time. But somehow they managed it and the human race went forth to multiply in a fashion most pleasing. Far better than those useless stone giants he’d made last time.
Visitors to TIWANAKU nowadays tend to find it full of stone and mystery.