Tala is a Sanskrit word which is largely used in the metaphysical systems of India, both in contrast and at the same time in conjunction with loka. As the general meaning of loka is "place" or rather "world," so the general meaning of tala is "inferior world." Every loka has as its twin or counterpart a corresponding tala. http://www.theosociety.org/pasadena/ocglos/og-tuvwy.htm