In May 2006, climber Dean Potter performed as many as six free solo ascents of the arch. Climbing Delicate Arch was not explicitly forbidden under the rules in force at the time which only stated that routes "may be closed" on any named arch; however, most climbers accepted that the named arch formations should not be climbed. The NPS has since closed the loophole by disallowing climbs on any named arch within the park year-round. Slacklining and the placement of new fixed anchors on new climbs is also prohibited.