Colosseum・It was the basement.
http://slicer93.mbsrv.net/20061207130542.jpg
Stone humans were made in the small private room.
The atom is made up of many Neus（Neutrino）.
The Neus in the cubicle wall of the private room gave the energy to Stone humans.
Newly born Stone humans passed through between the walls which gave energy to them and the atoms of Stone humans were able to be bonded more firmly.