"Mooning the cog" is a long tradition for hikers, especially those completing the Appalachian Trail, which passes over the highest point in the northeast.
But the practice offends some, and on several weekends this fall some undercover officers took a ride on the train and stopped it when hikers gave them the salute.
Eight hikers are being charged with a federal offense, since they were on National Forest land. They need to pay a fine or appear in the U.S. District Court in Concord to contest the charge
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