Donnelly's primary argument is that Plato’s account of Atlantis was largely factual. He proposed that Atlantis was:
: His theories influenced everything from H.P. Lovecraft’s fiction to modern films like Disney's Atlantis: The Lost Empire and the work of modern alternative historians like Graham Hancock. Master of Disaster, Ignatius Donnelly Atlantis The Antediluvian World
: A large island in the Atlantic Ocean where humanity first transitioned from barbarism to civilization. Donnelly's primary argument is that Plato’s account of
: He claimed the Azores were the surviving mountain peaks of the sunken continent. Historical Context and Influence Atlantis The Antediluvian World
Donnelly used a wide array of cross-disciplinary data—most of which has since been discredited by modern science—to build his case: