The hot spring water is classified as sodium bicarbonate-rich, often referred to as 'beauty water' due to its skin-softening properties.
Unlike commercial hot springs, there are no built-in tubs; visitors must manually clear river rocks to create their own bathing pools.
The location is subject to frequent geological changes and siltation, meaning the exact location of the hottest vents can shift after heavy rainfall.
It is a popular destination for 4x4 off-road vehicle enthusiasts due to the rugged terrain required to reach the riverbed.
Peng Peng Hot Springs is a remote, undeveloped riverside thermal area located within the Luoyesong (Larch) forest region of Datong Township. The springs emerge from the gravel banks of the Yilan River, requiring visitors to navigate riverbeds to access the geothermal pools. The water is carbonated and typically maintains a temperature suitable for soaking by digging personal basins into the river stones. It is categorized as a primitive, wild hot spring site rather than a commercial facility. The surrounding landscape is defined by its seasonal transition of golden larch trees in late autumn. Access is highly dependent on river water levels and local weather conditions.
The elevated riverbank offering a panoramic view of the steaming water pools set against the backdrop of the Larch forest.
Bring a sturdy shovel to dig your own soaking basin in the gravel.
Wear water shoes with good grip to protect feet from sharp river rocks and hot silt.
Check local river level forecasts and weather warnings before attempting to reach the site, as flash floods are a genuine risk.
Do not attempt to drive into the riverbed during or immediately after typhoon season or heavy rainfall.
Access is periodically restricted by the Forestry Bureau or local authorities during severe weather events or for forest fire prevention.
Practice 'Leave No Trace' principles by packing out all waste; respect the privacy of other campers and bathers.
