Naradevi Temple, also called Swetakaali Temple, is a Hindu temple located in an older part of Kathmandu, Nepal. It is believed that occult and tantric rituals are performed in the temple and there is a female energy in the temple. The goddess housed in the temple, Sweta Kali is believed to receive human sacrifice in the ancient times. The goddess is also referred as Neta Ajima by the Newar community. The goddess is also considered to be the mother of the goddess Kumari Chandeswori Bhagwati.
Tantra are the esoteric traditions of Hinduism and Buddhism that developed in South Asia from the middle of the 1st millennium CE onwards.
The term tantra, in the Indian traditions, also means any systematic broadly applicable text, theory, system, method, instrument, technique or practice.
A key feature of these traditions is the use of mantras, and thus they are commonly referred to as Mantramārga ("Path of Mantra") in Hinduism or Mantrayāna ("Mantra Vehicle") and Guhyamantra ("Secret .