Flagstone is an amazing andesite crag located off Forest Road 350 in the Willamette National Forest. Park at a pullout and take a very short hike past an information sign to the crag. There is a wide range of mostly sport climbs with vertical faces and overhangs. The Hydrotube area has great quality routes and sees a lot of traffic. You’ll notice an obvious tube-like formation that extends all the way down to the base of the crag.