This unusual geological formation is presumably natural and tells a story of eons of erosion. There is supposed to be a second formation farther along the same trail to the south but I was not able to find it.
From the northwest corner of Riverside Park of La Crosse, you can see a triple confluence of rivers: to your left, the Mississippi River; straight ahead, the Black River; and on your right, the La Crosse River.
From just the right angle, this boulder has the silhouette of a tortoise. Standing next to this rock, you also get a great view of the mighty Mississippi River valley.
Looking out over the mighty Mississippi River valley stands the aptly named Tortoise Rock. From the perfect vantage point, this boulder bears an uncanny resemblance to a mighty ancient tortoise. …
The Rim of the City Viewpoint aptly describes this location, where you can sit on the edge of La Crosse and enjoy stunning views of the marsh and the Mississippi River.