also about the stargate itself.
fist the one in Giza was there because it was place there by ra or a goa'uld ?
the stargate in antartica that o'neil and carter discover was place there by who?, if atlantis was on earth that make 3 gate on earth, what was the point in having 3 gates?
also the one on atlantis seem so much more advance that the rest of the stargate that we see, if its the Ancient who build the stargate what was the reason for making it?, in season 3 when the Ancient return to atlantis why did they not use the stargate to return to they city?, they did created the stargate so why have they not make a new one or go to a planet where they have a gate and dial to atlantis, they did know where atlantis was since it was abandon on the planet for many century.