They achieved this through regular rejuvenation using advanced crystal technology, especially the large cylindrical crystal known as the Tuaoi Stone or Firestone housed in a temple in Poseidia (the capital).
Cayce stated that the misuse of the Tuaoi Stone (and similar crystals) was one of the major factors that led to the final destruction of Atlantis.
The Tuaoi Stone (also called the Firestone, Great Crystal, or Terrible Crystal) is one of the most famous and detailed elements from Edgar Cayce’s psychic readings on Atlantis.
According to Cayce’s readings, the Tuaoi Stone was:
The Tuaoi Stone was housed in a special temple or power station, often referred to in connection with the main temple complex of Atlantis.
Cayce stated that the misuse of the Tuaoi Stone (and similar crystals) was one of the major factors that led to the final destruction of Atlantis.
Tuaoi Stone
The crystal neighbor is the Cayce Tuaoi Stone / Firestone / Great Crystal trail.
The Tuaoi Stone: Cayce Great Crystal / Firestone neighbor to Cooper’s ley-and-crystal grid.