Rewalsar Lake, also known as Tso Pema, is a mid-altitude lake located in the mountains of the Mandi district, 22.5 km south-west from Mandi, in Himachal Pradesh, India. Its elevation is about 1,360 m above sea level, with the shoreline of about 735 m. Rewalsar Lake is a sacred spot for Hindus, Sikhs and Buddhists, and sacred to Tibetan Buddhists for the Vajrayana practices of Padmasambhava and Mandarava, which are credited for the lake's creation. The Sisu fair held in late February/early march, and the festival of Baisakhi are important events at Rewalsar.