"Finding Nirvana is like Locating Silence" Jack Kerouac- Dharma Bums
Located in Gila National Forest, this trail used to follow an old pipeline that was built in 1893 to provide water to a nearby mining town. Around 1930 the walkways were built to aid in the repair of the pipeline. In wasn't until 1978 that the trail was opened to the public.
UPDATE: Unfortunately, it looks like most of this trail was damaged in September 2013 when the canyon was flooded. The Forest Service website says that it is closed indefinitely.