True Book of Mormon Geography
Land - Seas - Prophecies
ASCENDS TOWARD THE SOUTH
The Narrow Neck itself must ascend toward the South:
And it bordered upon the land which they called Desolation it being so far northward that it came into the land which had been peopled and had been destroyed of whose bones we have spoken which was discovered by the people of Zarahemla it being the place of their first landing and they came from there UP into the south wilderness (Alma 22:30-31)
If your Narrow Neck ascends toward the North (As the Batavia Moraine.), it cannot be the true Narrow Neck spoken of in The Book of Mormon.
ALONG THE WEST SIDE OF BOOK OF MORMON LANDS
a. It should be along the West Sea.
b. It should be on the west side of Book of Mormon lands.
c. It should have a stretch of land 1.5 days wide to the east of it. (The entire width of Book of Mormon lands.)
d. The land to its east should be flat.
e. There is nothing to its west.
The Batavia Moraine fails all five points. In fact, Tonawanda Creek runs through the City of Batavia which means, Batavia was one of the lowest parts of Lake Tonawanda! The Batavia Moraine would have only been seen, used, and accessible from the Land Northward, and would have merely been used as a peninsula since it descends toward the south, into Lake Tonawanda.
FORTIFICATIONS
Squire mentioned wooden fortifications along the Batavia Moraine, but those postdate Nephite forts by 1400 years. All Nephite fortifications were destroyed by the Lamanites. (Mormon 5:5)
The only fortifications we should expect to find after 1400 years would be earthen walls. The city with the largest earthen walls was the City Bountiful.
On our Land Southward page we identify the City of Bountiful as modern day Buffalo. Early discoverers of the area did in fact find an earthen wall surrounding it, with a cache of tools, weapons and utensils numbering in the thousands.