This mound appears as an irregular contour in the vicinity of N1400E0, in Section 4 just to the north of Mound 11. North of the contour is what is obviously a borrow pit. It was examined by the author several years ago and was designated a mound because of its proximity to the borrow pit, its appearance, and its relationship to other mounds.
To the west of Mound 89 at N1400W200 is a similar contour. Visual inspection suggests that it does not have the regularity exhibited by Mound 89; therefore, it has not been designated a mound.