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The iconic Linn Cove Viaduct winds through a High Country autumn. With many leaves having already changed on Grandfather Mountain, experts are expecting this weekend to offer leaf-lookers some prime viewing. (Photo by Skip Sickler)

The viaduct, which spans 1,243 feet along Grandfather, weighs about 7,650 pounds and was completed in 1987 at a cost $10 million. The surrounding overlooks offer viewers spectacular vistas of the valleys below.