Tombstone Prarie Trail 3420 is a hiking trail in Linn County, Oregon. It is within Willamette National Forest. It is 0.7 miles long and begins at 4,232 feet altitude. Traveling the entire trail is 1.4 miles with a total elevation gain of 271 feet. Near the trailhead there are a restrooms and parking. The trail ends near the Tombstone Prairie information board.