SPEARFISH, S.D. (AP) -- It was one chilly climb. A guy scaled the frozen Bridal Veil Falls in nothing but a pair of boots. National Forest Service officers were dispatched to the South Dakota location after getting reports of a naked climber. Another man was on the ground taking pictures. Bonnie Jones with the National Forest Service says the two men explained that they "wanted to have a light-hearted moment." They hoped to make people laugh as they drove past. The Black Hills Pioneer reports the men were given a verbal warning.