What is beneath the 7th underworld?

Reference - Srimadbhagvat 5.25.1 to 5.25.3

Photo Source - By Taro Taylor (originally posted to Flickr as The Abyss) [CC BY 2.0], via Wikimedia Commons

Beneath the Abyss 

or 7th underworld 

at a depth of 30000 yojana, 

is located, 

the permanent and Tamsi (dark) Kala of God, 

famously known as ANANT.

This Kala is also known as SANKARSHAN.

This is because it has a ego (word I) and 

it  unites or mingles the OBSERVER and the OBSERVATION. 

(May be something like black hole which swallows everything)

This God Anant (Endless) 

has a thousand heads.

The entire world 

(7 upper skies consisting of 21 heavens 

and 7 lower skies consisting of 21 hells 

including earth) 

is standing on only one of this 

1000 heads. 

This world diagrammatically looks 

like a mustard seed on one of this heads. 

(So big are the heads)

When the great day of doom comes 

(destruction of 7 upper skies 

consisting of 21 heavens 

and 7 lower skies 

consisting of 21 hells 

including earth ) 

and He desires to destroy the world, 

at that time, 

His beautiful  eyebrows 

which are rotating 

under the influence of 

grudge or anger, 

produces or manifests 

Destroyers 

called RUDRAS

from the center of those eyebrows.

The arrangement of number of this Rudras is 11. 

(11 Destroyers manifests)

They all have 3 eyes 

and a trident 

in their hands.