In 2010 we took a trip to Wisconsin, and visited Door Bluff Headlands park. There didn’t seem to be any trails down to the water, but we started making our way down the slope. This was a nice group of ferns.
The slope was pretty difficult, picking our way down the cliffs. We were about to give up with we met a couple who were walking back up. They said “You’ve got to see what’s down there!” and showed us a few photos from their camera.