Hot springs in Xinbeitou and Beitou with high temperature and many sources are caused by the terrestrial heat of Datun Mountains. Thermal valley is one of the earliest hot spring sources found in Taiwan.
The green sulfur in Thermal valley is the acid spring. The consistency of hydrogen is 1.4, the temperature is 85。C, the color is translucent gray, and it has light radiation.
The hot spring in Beitou Hot Spring Road is white sulfur. Its PH between 3-4, as vitriol salt spring, translucent white and yellow, 50。C - 90。C, and light acidity.
Beitou hot spring has been famous since Japanese colonial times. The area is around with historic monuments and natural scenic spots. Beitou Museum, Yinsong Building, Xingnai Spring, Beitou Library, Beitou Hot Spring Park, and the Folk Museum connect into a hot spring route.