Lake Saiful Muluk (Urdu: سیف الملوک )is a lake located at the northern end of the Kaghan Valley (34°52′37.34″N, 73°41′37.71″E) near Naran. It is in the north east of Mansehra district of North West Frontier Province, Pakistan. At an altitude of 3,224 m (10,578 feet) above sea level it is amongst one of the highest lakes in Pakistan.
The lake is accessible by a 14 km jeep road from Naran (which is accessible by a metalled road from Mansehra via Balakot and Kaghan) during the summer months. On foot, the trek from Naran to the lake takes about 4-6 hours. The water is clear with a slight green tone. The clarity of the water comes from the multiple glaciers all around the high basin feeding the lake which provides a good scenery. Malka Parbat that is shining in the lake is the biggest source. It is speculated that an underground river empties into the lake; which is why its depth is unknown.
A fairy tale called Saiful Muluk, written by the famous sufi poet Mian Muhammad Bakhsh, is associated with the lake, which discuss a prince who fell in love with a fairy princess. The impact of the lake beauty is of such extent that people believe that fairies come down to lake in full moon.