Complex sentence: The gorge reaches a depth of 800 feet just south of the Gorge Bridge, now a popular Taos tourist attraction, which was completed in 1966 and spans the gorge ten miles northwest of Taos.
Split into simpler sentences: The gorge reaches a depth of 800 feet just south of the bridge. The Gorge Bridge, a popular Taos tourist attraction, was completed in 1966 and spans the gorge ten miles northwest of Taos.