More useful info:
This is me on the Grave Creek Mound:
I've visited Circleville, Ohio, where they initially built the city with the earthworks in mind but later changed them. The drawing below was made in 1836.
In 1834, Joseph Smith led Zion's Camp through Ohio, Indiana, and Illinois, which he described as "the plains of the Nephites."
They did not pass through Circleville, but when they were about 55 miles west of Circleville, they encountered a large mound in Enon, Ohio. I've visited that site. This is where Joseph related the account I added later in this post.
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Today, just before the 200th anniversary of Moroni's first visit to Joseph Smith, a major Hopewell earthwork, located in what Joseph described as "the plains of the Nephites" and dating to Book of Mormon times, has been recognized as the United States’ 25th addition to the UNESCO World Heritage List.