The Taroko Gorge at Hualien is arguably Taiwan's foremost scenic attraction. The Gorge is formed of solid marble cliffs which tower over 300 meters in places above the torrential Liwu Ho (Liwu River) which flows through it. The road that slices through the gorge is just as impressive as the gorge itself. The road was initially conceived as a military route, and construction of it started in 1956. More than 450 men lost their lives in building the road through the gorge, cutting it from the mountains. A shrine, called Changchunssu (Eternal Spring Shrine), was built on a cliff overlooking the Liwu River, as a memorial to these servicemen who lost their lives constructing the road. An underground spring flows below a graceful moon bridge forming part of the shrine and cascades down the cliff to the Liwu River below, and symbolises the dedication, sacrifice and undying spirit of the rough and tough men who died in building the road, and in whose honour the shrine was built. Appropriately, worshippers light cigarettes rather than incense in their memory.