Mahanirvana Tantra Of The Great Liberation - Tapa dura

Draw a triangle with the Maya Vija within it, and around it two concentric circles (the one outside the other). In the space between the two circumferences of the circles draw in pairs the sixteen filaments, and outside these the eight petals of the lotus, and outside them the Bhu-pura, which should be made of straight lines with four entrances, and be of pleasing appearance.

This is not the usual "New Age" tantric sex manual, but a deeply esoteric and traditional book. The scene of the revelation of this Tantra is in the Himalayas, a holy land weighted with the traditions. Here in these lofty lands, rose the great mountain, the Sapta Kula Parvata. In these mountains Munis and Rishis lived. Here also is the Kshetra of Shiva Mahadeva, where His Spouse Parvvati, the daughter of the Mountain King, was born, and where Mother Ganges also has her source. The paradise of Shiva is a summerland of both lasting sunshine and cool shade, musical with the song of birds and bright with undying flowers. The air, scented with sweet fragrance, resounds with the music and song of celestial singers and players. It is not, however, necessary to go to the Himalayas to find Shiva. He dwells whereever his worshippers, abide, and His mystic mount is to be sought in the thousand-petalled lotus in the body of every human.