Ledge Park. Dodge County, WI. The park is situated on an exposed section of the Niagara Escarpment (the same formation that Niagara Falls goes over 800 miles away). Most of it was buried in Wisconsin by the glaciers 10,000 years ago, but it pokes through in a few places.
This part of the trail is on a chunk of rock that has separated from the main formation. It's about 20 feet down to the ground on either side of where the trail runs.
This is at ground level below where the first picture was taken. The large yellow maple tree is the same one as in the center of that picture
The view from atop the escarpment. Horicon Marsh is in the distance.