Mbh 5.109.1b

It is in this region that lives of diverse forms all come and are then dissociated into their five (constituent) elements. It is in this region, O Galava, that men of wicked deeds rot (in tortures). It is here that the river Vaitarani flows, filled with the bodies of persons condemned to hell. Arrived here, persons attain to the extremes of happiness and misery. Reaching this region, the sun droppeth sweet waters and thence proceeding again to the direction named after (Vasishtha), once more droppeth dew. It was here that I once obtained (for food), a prodigious elephant battling with an enormous tortoise. It was here that the great sage Chakradhanu took his birth from Surya. That divine sage afterwards came to be known by the name of Kapila, and it was by him that the (sixty thousand) sons of Sagara were afflicted. It was here that a class of Brahmanas named Sivas, fully mastering the Vedas, became crowned with (ascetic) success. Having studied all the Vedas they at last attained eternal salvation. In this region is the city called Bhogavati that is ruled by Vasuki, by the Naga Takshaka and also by Airavata. They that have to journey hither (after death) encounter here a thick gloom. And so thick is that gloom that it cannot be penetrated by either the Sun himself or by Agni. Worthy of worship as thou art, even thou shalt have to pass this road. Tell me now if thou wishest to sojourn towards this direction. Else, listen to an account of the western direction.”’”