The LaMoille Rock Shelter in located in the southeast of Winona County about a quarter mile southeast of the LaMoille Cave. The site was located when excavation for a road was undertaken and a local resident believing the possibility of artifacts dug a trench which uncovered evidence of habitation. The rock shelter had been filled with natural deposits of sand, when this was removed evidence of human habitation was found. The shelter had been occupied as the shelter was filling with sand Several very distinctive horizontal lines of hearths were visible and there was an accumulation of charcoal, ashes, fish bones, mammalian bones, carpace, shell, potsherds, artifacts and stone flakes which occurred throughout the many layers of excavation.
It is believed the site was primarily a fishing camp due to the large accumulation of fish bones, clam shells, snail shells and carapace found in all levels . Pottery was found only above the sixth level and indicates the occupants to be of the Woodland culture. The lack of pottery below this level may be chance only. Projectile points which were made of quartz and chert were scattered throughout the deposit. In total, three stemmed points of chert were found, six knives were found (five were made of chert and one of fine grained quartz) , three chert scrapers which were made of chert were found, and t were found. In addition a long slender flexible bone was found which is undetermined use. There was also evidence of jewelry or an amulet. A broken copper object of unknown use was also located. Nearly fifty pot shards were recovered and most of these belonged to one vessel which was tempered of coarse grit and the outer surface has cord markings.
Wilford, Lloyd A. "The LaMoille Rock Shelter". The Minnesota Archaeologist, No. 2, 1954, P. 17-24.