Quote Originally Posted by Willi View Post
Not so sure the 630 ft elevation had a whole lot to do with it.
Many many areas around Warren and Madison Heights were at around 630 feet.
Perhaps it had more to do with Crescent Shape or some other odd feature.
Maybe it was flood plain deposit material from a local water way ? Hey I'm guessing !
Click here for a street view of a location 2.5 miles to the southeast of "Prairie Mound" to see what happens to a hill when a road is built through it.

The 630 ft elevation at Mound and 7 Mile Rd. is all that remains of "Prairie Mound" a century later after the construction of subdivisions and roads have leveled it to a barely-detectable rise in elevation as measured by the USGS.