One of the best illustrations of Atlantis showing the concentric rings, though Atlantis was built on "a mountain low on all sides".
concentric rings of land still exist at the Atlantis site, Pampa Aullagas, Bolivia
Above, the city of Atlantis and the canal to the sea, 50 stades distant.
above, Atlantis on the Altiplano by lee Smart
above, Atlantis on the Altiplano from "Atlas of Atlantis"
Atlantis illustration from "active mind".
Atlantis Dreams by Flaviobolla.
above, Atlantis by Townsend
above, Atlantis and the Nautilus
above, "Atlantis" by Ron Miller from 20,000 Leagues under the Seas
The Atlantis island now on dry land at Pampa Aullagas (with missing half restored)
A "mountain low on all sides" as Plato called it.
see also Atlantis maps