The 'Water Curtain' is a repurposed mining tunnel that accidentally tapped into a natural groundwater vein during excavation.
The water cascading over the tunnel entrance is sourced from the pristine, mineral-rich springs of the surrounding Central Mountain Range.
The trail leading to the waterfall passes through a historic bridge and cave network that predates modern tourism infrastructure in the region.
The sediment in the Mu-Gua River valley area gives the local water a distinct turquoise tint, which contributes to the site's local name, 'Emerald Valley'.
Emerald Valley Water Curtain Waterfall is a natural attraction in Xiulin Township, Hualien, known for a tunnel path behind a cascading waterfall. The site features a man-made tunnel originally built for mining operations that now channels spring water through the rock face. Visitors walk through this damp, light-filled tunnel to experience the waterfall from the inside out. The surrounding trail consists of natural terrain with river views and steep, uneven rock sections. The water temperature is characteristically cool throughout the year due to the mountain spring source. The area remains a popular destination for hikers exploring the Mu-Gua River valley.
From inside the tunnel looking out through the shimmering curtain of water toward the forest.
Wear water-resistant footwear with excellent grip as the tunnel floor is perpetually slippery.
Bring a waterproof bag for electronics and a headlamp for navigating the darker sections of the tunnel.
Expect to get completely soaked while walking through the water curtain.
Attempting the trail during or immediately after heavy rainfall, as flash floods and rockfalls are significant safety risks in this river canyon.
The trail may be closed periodically by local authorities during typhoon season or following significant seismic activity for geological safety assessments.
Do not leave trash in the tunnel or riverbed; respect the fragile karst environment and avoid using soap or chemicals in the spring water.
