CHOOSING THE LOKAS
Everything in creation is either going ...
The final dimension is the Satya lok where Brahma, Vishnu and Mahesh reside. Only souls which have an unshakable desire to merge with these energies are able to reach here. At the gate of Shiv Dham there are ganas in the form of bhoot, pret and pishach that try to dissuade a sadhak from entering. Nandi is one of the favorite ganas of Lord Shiv who fulfills all physical and material desires to keep the sadhak immersed in them so that he/she does not move to the Shiv Dham.
Even though light is the fastest thing on earth, it cannot traverse through these dimensions in an entire lifetime. Only thoughts can take us to these dimensions.
The dimensions below earth are- Atala, Vitala, Sutala, Talatal, Mahatala, Rasatala, Paatala, which we should just read and forget. These are for those beings who live a life devoid of service and charity, full of selfishness- in other words, a life of darkness. This includes beings who harm others or even after being in a position of preventing pain of others, look the other way. These souls are sent to these lower lokas to go through the processes of cleansing through pain, fear, claustrophobia and stickiness with slime. The lower worlds are dark as the occupants of these lokas desire only darkness. The forms taken by the souls in these dimensions are gross, slimy, painful and full of pure fear all the time.