Wall of Atlantis
Doug Fisher is the author of a long-awaited book with the intended title of The Atlantis Maps: The Rise of Atlantis and the Fall of a Paradigm in which he identifies Atlantis as North and South America with the Plain described by Plato being the region of Mesopotamia, in northeast Argentina. The book was eventually published in 2018 as Maps, Myths and Paradigms  with details of its contents listed on his website.(c) Four chapters had been available online(a) together with a few additional articles.
Fisher has published an illustrated paper on Graham Hancock’s website with the self-explanatory title of The Walls of Atlantis(b). His suggestion of a huge outer wall encircling the city of Atlantis has been disputed by Jim Allen, provoking further comments(c) from Fisher.
He has also criticised the methodology, which Allen used to place Atlantis on the Altiplano(d), while I question the credibility of both their theories.
When Fisher’s book was finished and due for publication with its new title, he closed his old website and prepared a new site(e) to coincide with the publication of the book.
Fisher has published two other papers(f) on Hancock’s website relating to the maps of Johannes Schöner and Oronteus Finaeus.>In October 2022 he published another paper on the same site challenging the currently accepted theory of plate tectonics highlighting weaknesses in the concept and proposing a fresh look at the expanding earth hypothesis.<
(a) See: Archive 2865 (no images)
(c) http://www.abovetopsecret.com/forum/thread646457/pg2 (halfway down the page)