This part of Taiwan is rising because of the subduction of Philippines Sea Plate under the Eurasian Plate.
Eventually, the erosive power of Liwu River carved a path through the marble to create Taroko Gorge.
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Until the 1950s only a trail ran through the gorge.
Today the Central Cross-Island Highway runs across the wall of the gorge.
Despite its name, the Central Cross-Island Highway is a narrow and winding mountain road with numerous bends.
This part is now strictly pedestrians only as vehicular traffic is routed through another tunnel.
Heavy rain from typhoons often dislodge soil and rocks onto the highway making sections of it unpassable.
The area is prone to seismic activity.
The gorge terminates at a tiny village of Tiansiang where there is a beautiful pagoda and a temple.
