The area is historically significant as the former site of the 'Jiajiuliao' logging trail, which transported timber during the Japanese colonial period.
The name 'Red River Valley' (Honghegu) was inspired by the riverbed's reddish sedimentary rock formations, particularly visible when the water levels are low.
The trail connects to the broader Wulai mountain trail network, providing a low-altitude alternative to higher elevation climbs in the region.
The Nanshi River, which flows alongside the trail, is a primary tributary of the Xindian River and serves as a vital water source for the Greater Taipei area.
Honghegu Trail, also known as the Red River Valley Trail, is a riverside path located along the Nanshi River in the Wulai District of New Taipei City. The trail is distinctive for its turquoise river waters and rugged riverbed topography featuring large boulders and natural swimming holes. The route follows the path of an old logging trail, leading hikers through dense secondary forests and transition zones of subtropical flora. The path is characterized by varying terrain, including sections of natural dirt paths, stone steps, and areas prone to erosion near the water's edge. Visitors often use the trail as a gateway to access the river for water-based recreation during the warmer months. The geological composition of the area is primarily sedimentary, resulting in a dramatic, rocky river channel that contrasts with the surrounding greenery.
From the Jiajiuliao suspension bridge looking down the river toward the large rock formations.
Wear footwear with high-traction outsoles, as the riverside rocks and dirt paths can become slippery when damp.
Carry a dry bag if you plan to access the water, as the river current can be unpredictable after rainfall.
Bring insect repellent, as the humid, forested sections are prone to mosquito and midge activity.
Do not attempt to swim or approach the water during or immediately after heavy rainfall, as flash floods are a frequent risk in this mountain valley.
Trail accessibility may be restricted following heavy typhoons or significant rainfall; check local government landslide alerts before departure.
Practice 'Leave No Trace' principles; carry all waste out and avoid disturbing the natural river ecosystem or local wildlife.
