Borith Lake is a shallow glacial lake about four kilometres south of Passu village, positioned between the Passu Glacier moraine and the main valley floor. It is a serene spot in a landscape that otherwise consists mainly of rock, gravel, and ice — the lake's reeds and the green margins around it stand out sharply against the grey and brown surroundings.
The walk from Passu to Borith Lake follows the valley floor and takes about ninety minutes each way on a clear track. From the lake, a trail continues to the Hussaini Bridge, making it possible to loop back to Passu via the suspension bridge and the east bank of the Hunza River. Bird-watchers visiting in late April or early May have the best chance of seeing migratory species using the lake as a staging post. The walk is straightforward and requires no special equipment.