Peak Mountain 3Add photo Edit Photo MapCopy LinkHomeUSASouth DakotaCuster State ParkSylvan LakeSylvan Lake BoulderingNortheast Gully BouldersUndertaker BoulderThe UndertakerV2+boulderingFA Ernie SteflieUPDATED BY vietnguyen Tick this climbDescriptionRoutes in Undertaker Boulder1The UndertakerV2+Bouldering