Ansoo Lake ( Tear 's Lake ) is a high-altitude lake ( elevation 16,490 feet or 5,027 metres ) in the Kaghan Valley in the Mansehra District of the North-West Frontier Province of Pakistan . Ansoo Lake is a high-altitude lake ( elevation 16,492 feet or 5,027 metres ) in the Kaghan Valley in the Mansehra District of the Khyber-Pakhtunkhwa province of Pakistan .