I was extremely impressed with Ha Ha Tonka State Park. Free, lots of trail choices, and very scenic. Nice castle and other remains...great trails, water features, hawks, friendly and informative staff, informative signage, and lots of parking near trail heads. I wouldn't go too far out of my way for this, but if you are anywhere near Camdenton (we were staying in Rocky Mount), this state park is a great place to visit.
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