US | graffiti Man Allegedly Graffitied Over Prehistoric Rock Carving He reportedly claims he was drunk and wanted revenge on his boss By Newser Editors and Wire Services Posted Oct 23, 2015 5:40 PM CDT Copied Sequoia National Forest (AP Photo/Jeff Cordes, Wildlife Biologist, Hume Lake Ranger District, Sequoia National Forest) Authorities say a man recently sprayed graffiti on a prehistoric rock carving of a bighorn sheep in California's Sequoia National Forest. Prosecutors say 58-year-old Christopher Harp sprayed a black substance on several large rocks, including one depicting a bighorn sheep. Special Agent Brian Adams with the US Forest Service says Harp admitted to the graffiti. He says Harp claimed he was getting revenge on his boss for talking down to him. Harp told the agent he was drunk and didn't know the rocks had historical value. He has pleaded not guilty to charges he damaged the rock. Court records show Harp has been placed in treatment. Read These Next Mystery donor to US troops has been identified. At least two have been arrested in the Louvre heist. The strangely, lonely final days of Gene Hackman. Why the Brightline of Florida is called the 'Death Train.' Report an error