Another belief is in an axis mundi or world tree which connects the heavens, the terrestrial world, and the underworld. In Indian religions, heaven is considered as "Svarga loka", and the soul is again subjected to rebirth in different living forms according to its "karma". This cycle can be broken after a soul achieves "Moksha" or "Nirvana". Any place of existence, either of humans, souls or deities, outside the tangible world (Heaven, Hell, or other) is referred to as the "otherworld".