Between Halloween and Nov. 13, the Kane Cemetery was vandalized.
Thirty-one grave sites were desecrated. The damage ranged from pushing over and breaking headstones to spray-painting monuments.
The Park Service is investigating the crime. A $1,000 reward is being offered by the National Park Service for the prosecution and conviction of the person or persons responsible.
People with information should contact Pete Sawtell or Jessica Korhut at 307-548-5421.