Bitteroot Briar

From publisher blurb: Bitteroot Briar is an OSRIC(tm) module designed for 4-8 adventures of levels 2-4. The small village of Ipwich has been plagued by mystery for years. Why do some people, last seen decades ago, come stumbling out of the woods looking as young as the day they disappeared, raving mad? Why does the forest itself whisper in the blowing of the trees or the babbling of a brook, beckoning to its center? Local folklore holds that the answers to these questions lie on the other side of an immense wall of thorns in the heart of the forest, the Bitterroot Briar, as do the remains of a good number of would be riddle solvers.