History of the Church entry speaks of Joseph identifying a "Nephite altar."
B. H. Roberts, ed., History of the Church of Jesus Christ of Latter-day Saints (Salt Lake City: Deseret News, 1905), 3:34–35
Saturday, 19.—This morning we struck our tents and formed a line of march, crossing Grand River at the mouth of Honey Creek and Nelson's Ferry. Grand River is a large, beautiful, deep and rapid stream, during the high waters of Spring, and will undoubtedly admit of navigation by steamboat and other water craft. At the mouth of Honey Creek is a good landing. We pursued our course up the river, mostly through timber, for about eighteen miles, when we arrived at Colonel Lyman Wight's home. He lives at the foot of Tower Hill (a name I gave the place in consequence of the remains of an old Nephite altar or tower that stood there), where we camped for the Sabbath.