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 Early takeaways from the new release of Epstein files. Savannah Guthrie will start the new year in silence. An early Christmas gift to federal workers, from the president. Kiss cam woman slams Gwyneth: 'What a hypocrite.' Report an error