ping!
I went there in 93. I read Barry Fell, too. I think he is basically right.
Skip it. Keep going a little farther north to see this instead. :-)
The Amphitheater at Ira Mountain was impressive. But the views from both peaks were some of the most amazing I've seen in my life.
Nice but I like Elephant Rocks better...
http://www.missouri-vacations.com/elephant-rocks-state-park/
woodhenge at cahokia is more complex and larger incorporating the pyramid of monk’s mound
There are a few places in New England that’s pre-historic. This is one, another is in Connecticut. Is the Newport, RI tower another?