Sankhu (alternative name: Sakwa (Nepal Bhasa: सक्व)) is a village development committee in Kathmandu District in the Bagmati Zone of central Nepal. At the time of the 1991 Nepal census it had a population of 2097 living in 353 individual households.
This place is also known as the Eighty Siddhas as there are four of five caves where the siddhas of India are said to have stayed. One of the caves is also said to have been the practice cave of Nagarjuna, and an image of the great master which was originally in the cave has been taken outside and placed some distance away.
The present temple was built by Raja Prakas Malla in 1655. It enshrines the main sacred representations of this site, Ugra-tara manifesting as Ekazati, which are said to give very powerful blessings, particularly the image in the upper temple. The image in the lower temple is red in colour with one face and four arms, two of which hold a skull-cup (kapala) and knife at her heart, and the remaining two hold a sword and an utpala lotus. In the upper temple is an identical image of Ugra-tara in bell metal, in which her left leg is outstretched. In the upper temple is the loom of the Nepali Princess Brhikuti, spouse of the Tibetan king Songtsen Gampo. In both the upper and lower temples, Vajrayogini is flanked Baghini and Singhini, the Tiger and Lion-headed Yoginis. In the same upper room in the upper temple is a solid bronze standing Buddha and a standing Lokeshvara. Below this shrine room is a small room containing self-arisen (swayambhu) stupa in stone.
The Kathmandu Valley (Nepal Bhasa: स्वनिगः Svanigaḥ [sʷoniɡəː], Nepali: काठमाडौँ उपत्यका), located in Nepal, lies at the crossroads of ancient civilizations of Asia, and has at least 130 important monuments, including several places of pilgrimage for the Hindus and the Buddhists. There are seven UNESCO World Heritage Sites within this valley. Historically, only the Kathmandu Valley was referred to as "Nepal" by people who lived outside the valley. After the annexation of the valley by the Gorkha kingdom, and subsequent conversion of the valley as the capital of their empire, this designation of "Nepal" was extended to every land they conquered. The valley itself was referred to as "Nepal Proper" by British historians.