HomeUSASouth DakotaNeedles Of Rushmore, TheMount Rushmore National MemorialMount BaldyQuarterWays, TheAddys Boulder ( L)Addys Boulder ( L)LAT,LNG 43.89110, -103.45650CREATED UPDATED Edit MapShareDescription[Edit]The Gatekeeper boulder is a semi "hidden" boulder unless you are looking for it. It holds one harder problem on it. Look for tall arête boulder facing the trail on the hillside.1 ClimbsComing soon: New Climbs1Addys AreteV5Bouldering