Preservationists: Gas drilling threatens carvings

(AP) -- Along Utah's Nine Mile Canyon lies what some call the longest art gallery in the world - thousands of prehistoric rock carvings and paintings of bighorn sheep and other wildlife, hunters wielding spears, and warriors engaged in hand-to-hand combat. But now, a dramatic increase in natural gas drilling is proposed on the plateau above the canyon, and preservationists fear trucks will kick up dust that will cover over the images.

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