Walking the River

The most accessible way to experience the Ha Chu is on foot along its banks. The Yangthang to Hatey trail follows the calm stretch of the Haa Chhu on what was historically a trade route to Tibet. The walk takes roughly four hours at a gentle pace, and it passes through traditional villages where you can observe daily life — farmers working small plots, women churning yak butter, children returning from school along the river path. At certain bends the current drops over rocky shelves, creating small pools that the Bhutanese once considered sacred.↗

From Lechuna village, another trail descends to the river and crosses a quaint wooden bridge before continuing upstream along a seldom-used animal track. The forest here is dense with undergrowth, and the sound of the Ha Chu below is the main companion for the first hour before the path climbs away toward Jamtoe Goenpa monastery. This is a walk that rewards early-morning starts — the light through pine canopies onto the water is worth the detour.↗

The Valley the River Carved

The Ha Chu gave Haa Valley its shape and its character. The village of Haa sits at a steep drop in the river, with the old fort watching over the bend. The two great temples — Lhakhang Karpo (the White) and Lhakhang Nagpo (the Black) — stand on opposing slopes about 280 metres apart, looking down at the water that runs between them. Bhutanese legend says a Tibetan king released two doves to find sacred ground; the river below them was the valley's lifeline, and the temples guard its southern entrance.↗↗

The upper valley remains glaciated, but below the treeline the Ha Chu has carved a dramatic V-shape into the rock. Rocky outcrops line the banks in stretches you can see from the road as you descend from Chele La Pass. The catchment above is forested with alpine and sub-alpine conifers, and the river system feeds into the broader Wong Chhu, which eventually drains toward India.↗

Fish and Water

The Ha Chu was once home to native Dinnawah snowtrout and the locally revered asla, a cold-water fish the Bhutanese prize. Brown trout were introduced in 1930 and a hatchery was established at Haa immediately after — one of the earliest such facilities in the country. The FAO later assessed the Haa hatchery as more conducive to fish culture than lower-altitude alternatives. Today the asla population has been suppressed by the introduced trout, a quiet ecological story playing out beneath the walking path.↗