Canada has rarely been claimed as the location of Atlantis. In fact the only other reference, that I’m aware of, was by Samuel Poe in a truly dreadful book, in which he claimed the east coast of Canada and United States as Atlantean.
Now, Brian Johnston, a retailer of precious stones, has created a website(a) advocating Ontario as the location of Plato’s Atlantis. He offers a stone circle and what may be other megalithic standing stones along with many photos of the same as evidence. This is all held together by a large helping of speculation.
After describing in some detail a site in Ontario’s Northumberland County, he concludes that the location “might not be Atlantis!”