If you can deal with the complete lack of signage or encouragement, Jenne Butte Park is a very quiet and beautiful woodland area.
Yes, it certainly appears to be. Oh, you want details? It's entirely unclear, but I'd say daily dawn through dusk.
I stumbled upon this place by virtue of an ancient forum post on Portland’s hidden gems. Hidden gem is a good description, because if it wasn’t for the fact that it’s called a park and you can find it on google maps, you’d have no idea where it is or that you’re unlikely to get shot for trespassing when you step into it. When you do step inside, however, it’s very pretty indeed. And quiet; granted we went there on a cool December afternoon, but we didn’t see anyone else at all during the two hours we hiked around inside.
Not at all obvious, but there is an entrance off the Springwater corridor. Check out the point I’ve marked on google maps and also the photo revealed by clicking on the first thumbnail above… about 50 yards or so before the bridge heading east there’s a path on the right-hand side that takes you in. If getting there by car, there’s a bunch of spaces on Jenne Road, just north of where it crosses the Springwater corridor, or at the junction with Circle Avenue. Alternatively you can access the park via the surface streets on the park’s southern boundary – for example, at the end of SW 12th Ct off SW Linneman Ave.
If you find any factual innaccuracies in this post, please email me via richard at thingstodoinportland dot org so I can fix it for everyone. Thanks in advance!
East of SE Jenne Road / just off the Springwater Corridor towards Gresham. See below for more details. [Google map].