Set in a Haui Nam Dang National Park outside Pai. The water bubbles out of the ground in clouds of steam at the top of the hill and gets cooler as you head downhill.
You can choose your temperature and bathe in the river or one of the ‘hot tubs’ cut into the riverbank. Sometimes they're lit up by candles at night.
Tha Pai Hot Spring are near Huai Nam Dang Waterfall in Haui Nam Dang National Park, 8km outside of Pai town. You can take a 15-minute taxi ride, walk or cycle.
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