St. Louis Canyon in Starved Rock State Park, IL is probably about as interesting as geology gets in northern Illinois. There are sand stone canyons here with little waterfalls that eventually feed into the Illinois River. In the winter, they freeze over, of course. This makes for a really interesting contrast of textures between the rock and the ice.
This is an impressive state park and I hope to return several times this year.
In this photo I did a lot of texture enhancement with photoshop and ON1 Perfect Effects 8. I also added a little bit of a glow with that program, too. When I took the photo, I tried to get as high and to the left as possible and I was hoping to capture the lines and details in the rock.
I hope you enjoy!