HomeUSAMarylandRocky Gorge Reservoir ( Howard Duckett Reservoir)Crystal Ball BoulderCrystal Ball BoulderLAT,LNG 39.30030, -76.62960CREATED UPDATED Edit MapShareDescription[Edit]A huge blank, horizontal roof about 8ft above the trail.3 ClimbsComing soon: New Climbs1TarotV3Bouldering2Tarot CrackV2Bouldering3Crystal BallerV7Bouldering