Hesiod Theogony 743
 It is a great gulf, and if once a man were within the gates, he would not reach the floor until a whole year had reached its end, but cruel blast upon blast would carry him this way and that. And this marvel is awful even to the deathless gods. There stands the awful home of murky Night  wrapped in dark clouds. In front of it the son of Iapetus stands immovably upholding the wide heaven upon his head and unwearying hands, where Night and Day draw near and greet one another as they pass the great threshold
1 Enoch 18:11
9 is a region the end of the great earth: there the heavens were completed. 10 And I saw a deep abyss, with columns ⌈⌈of heavenly fire, and among them I saw columns⌉⌉ of fire fall, which were beyond measure alike towards the height and towards the depth. 11 And beyond that abyss I saw a place which had no firmament of the heaven above, and no firmly founded earth beneath it: there was no water upon it, and no birds, but it was a waste and horrible place. 12 I saw there seven stars like great burning mountains, and to me, when I inquired regarding them,
Notes and References
"... 18:11: This description (chasma mega) is a word-for-word parallel to Hesiod’s description of Tartarus ..."
Heiser, Michael S. A Companion to the Book of Enoch: A Reader’s Commentary, Vol. 1 (p. 181) Defender Publishing, 2019
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