Pātālaloka—the lowest of the universe's fourteen planetary systems; also, the lower planets in general; also the seventh tier of the lower planetary systems, where Bali Mahārāja reigns.

Patalaloka-the lowest of the universe's fourteen planetary systems; also, the lower planets in general; also the seventh tier of the lower planetary systems, where Bali Maharaja reigns.
 

Link to this page: https://prabhupadabooks.com/glossary/p/patalaloka-the-lowest-of-the-universe-s-fourteen-planetary-s