Sri Yantra is a very significant Yantra in the science of Tantra. Yantras are graphical pattern where different cosmic energy can be evoked, by following a procedure written in scriptures, along with recitation of mantra associated with the pattern made on the plate , that represent some cosmic energy.
This pattern is made on a metal plate, mostly copper or Gold and in some cases Bhoj patra. It can also be made on a solidified mercury, known as Parad, as a solid piece of art, like a pyramidal structure, dot being at the top, where Adhya Devi , the Goddess who created the world, resides
Photograph taken of the famous Shri Yantra from Tantra.
A trick photography with Nikon F3 in the natural light from window with pocket torch light used to fill dark space.