The river originates at the Thamsar Glacier in the Dhauladhar range of the Himalayas, flows through the Uhl valley crossing Bada Gran and Barot, both villages in the Uhl valley.
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Lumba Dugh also originates in the East of Dhauladhar range and flows along Luhardi before meeting Uhl.
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Uhl originates from a lake formed by the Thamsar Glacier in higher Dhauladhar range.
The train journey on this line provides beautiful views of peaks of the Dhauladhar mountain range, particularly in the stretch between Kangra and Mangwal, and also the ruins of the Kangra Fort.