Phou Pha Thi

Phou Pha Thi is an isolated mountain summit in Houaphan Province standing at approximately 1,786 meters, distinguished by steep limestone cliffs that rise on all four sides of this karst formation. The rocky terrain and dense vegetation surrounding it create a dramatic natural landscape.

During the Vietnam War, this mountain served as Lima Site 85 and housed a tactical navigation facility until North Vietnamese forces captured it in March 1968. This military chapter left a lasting mark on the region's history.

Local communities regard this mountain as a sacred place where powerful phi, traditional nature spirits, dwell according to Laotian beliefs. Visitors often sense the spiritual importance the site holds for people living in the surrounding areas.

Climbing to the summit requires solid physical fitness and careful preparation due to steep slopes and the remote location in northeastern Laos. Weather can change rapidly at the top, so proper gear and awareness of local conditions are important.

This summit stands completely isolated, positioned roughly 3 to 4 kilometers away from the nearest neighboring ridges. This isolation makes it a striking landmark that stands out visibly from far distances.

Location: Laos

Elevation above the sea: 1,786 m

Part of: Hūaphan

GPS coordinates: 20.46993,103.70618

Latest update: December 14, 2025 09:45