A particular part of पाताल where, according to the पुराणस् , the निवातकवचस् live. The महाभारत contains the following information regarding रसातल .

During the deluge the अग्नि called संवर्त rent the earth and reached up to रशातल . [mh-3-188-69 ] Mahābhārata • Vana parva .

The राक्षसी called कृत्या created by the असुरस् once carried away दुर्योधन to पाताल . [mh-3-251-29 ] Mahābhārata • Vana parva .

रसातल is the seventh stratum of the earth. सुरभि the mother of cows born from nectar lives there. [mh-5-102-1 ] Mahābhārata • Udyoga parva .

It is more comfortable and happy to live in रसातल than to live either in नागलोक or स्वर्ग . [mh-5-102-14 ] Mahābhārata • Udyoga parva .

It was in रसातल that महाविष्णु incarnated as बोअर् and killed the असुरस् with his tusk. [mh-12-206-26 ] Mahābhārata • Śānti parva

महाविष्णु , who assumed the form of हयग्रीव went to रशातल , killed मधु and कैटभ and resurrected the वेदस् . [mh-12-347-54 ] Mahābhārata • Śānti parva .

King वसु went to रसातल because he uttered one lie. [mh-13-6-34 ] Mahābhārata • Anuśāsana parva .

रसातल is अनन्त 's abode. बलभद्रराम who was an incarnation of अनन्त , gave up his material body at प्रभास tīrtha and attained रसातल . [mh-18-5-28 ] Mahābhārata • Svargārohaṇa parva .