Lake Mineral Wells State Park is home to Penitentiary Hollow, a sandstone canyon filled with history, legend, and the closest outdoor climbing routes to DFW. This guidebook helps new and seasoned climbers alike with maps, full color photos, route topography, rappel locations, as well as tips and tricks for setting up anchors in this canyon - notoriously difficult due to the bolt set-back. This guidebook takes you into the 21st Century with QR Codes linked to instructional videos. Not sure where to start climbing? Make sure to check out the Author's "Best Climbs in the Park" and "Best Climbs for New Climbers" sections, guaranteeing you'll get the most out of your visit, and fueling your desire to come back.