umm, NO
that is false, Atlantis came before Egypt and the Amem "Americas" ever existed, the true Egyptians admit the location of the lost lands. But it was not in mainland America though it was very near.
The Earth looked very different back then, the survivors of the deluge founded the Western and Eastern empires and cultures. Among them Te hu ti "Thoht 'thought'/Hermes Trismegistus" aka Thoth the Atlantean author of the emerald tablets.
Think of Atlantis as an Empire and not a continent

I tend to want to agree with you in some aspects. However, Sodona is VERY interesting. I have visited friends who live there and they always feel some errie sacredness about the place, that it just doesn't mess as a U.S territory. So whether it is part of Atlantis or not, something is definitely amidst there. Notice all national parks have restrictions....as if they don't you to know what's really there....