We're giving this page a facelift!Visit the previous versionto make edits.Peak Mountain 3Add photo Edit (TBD) Photo MapCopy LinkHomeUSACaliforniaSan Diego CountyNorth San Diego CountyRancho Penasquitos CanyonThumb BoulderHangnail RightV4Lucah ThumbV2-3boulderingFA Nicholas Brown, March 2020UPDATED BY vietnguyen DescriptionRoutes in Thumb Boulder1Hangnail LeftV2Bouldering2Hangnail RightV4Bouldering3Lucah ThumbV2-3Bouldering