Volunteers are working to remove graffiti from the Red Rock Canyon National Conservation Area in Nevada.
Vandals spray-painted on petroglyphs at a sacred Paiute site. One teen has been arrested in connection with the crime.
The Bureau of Land Management brought in a South African archaeologist who specializes in rock art to help remove the paint.
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Volunteers work to rid Red Rock petroglyph site of graffiti
(The Las Vegas Review-Journal 5/20)