Archeologists know the site as the Volcanic Tablelands, an otherworldly landscape of pink-hued cliffs and terraces shaped by wind, rain and earthquakes. AdvertisementFish Slough, a National Natural Landmark on the eastern edge of the Volcanic Tablelands, includes vivid petroglyphs chipped into bizarrely eroded volcanic tuff formations. The expansive petroglyph site is one of the oldest recorded in the West and easily accessible by road. Unauthorized drilling of core samples by a Caltech professor left dozens of 1-inch-diameter holes at the petroglyph site in the Volcanic Tablelands. There is no petroglyph site on public land in the United States that is not at risk right now from vandalism, he said.

Source: Los Angeles Times July 19, 2021 12:56 UTC