Nestled among the tall pine trees of Lory State Park, the Arthur’s Rock area offers a plethora of excellent granite bouldering. Although only a stone’s throw from Fort Collins, Arthur’s Rock has remained a low-key area since it’s initial development around 2000 and is one of the best hidden gems around. With well over 100 problems scattered throughout the peaceful forest overlooking Horsetooth Reservoir, Arthur’s Rock is well-worth a visit.