Petroglyphs taken from California recovered

Four ancient petroglyphs that were stolen from a historic site in Northern California last year have been recovered, but no suspects have been identified in the brazen theft, federal authorities said.

Four ancient petroglyphs that were stolen from a historic site in Northern California last year have been recovered, but no suspects have been identified in the brazen theft, federal authorities said.

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The petroglyphs, which were carved into volcanic rock more than 3,500 years ago, were discovered missing in October from the site in the Volcanic Tablelands, east of Yosemite, near California's border with Nevada on Thursday.