
1) Greek underworld
Found on
https://www.crosswordclues.com/clue/katabasis

Katabasis, or catabasis, (from Greek κατὰ, `down` βαίνω `go`) is a descent of some type, such as moving downhill, or the sinking of the winds or sun, a military retreat, or a trip to the underworld or a trip from the interior of a country down to the coast. There exist multiple related meanings in poetry, rhetoric, and modern psychol...
Found on
http://en.wikipedia.org/wiki/Katabasis

going down; military retreat
Found on
http://phrontistery.info/k.html

(Greek) going underneath; descent to the Underworld included in literature; many epics include a katabasis at some point; Homer includes a katabasis in the Odyssey and Vergil includes one in Book 6 of the Aeneid.
Found on
https://www.encyclo.co.uk/local/10135

a march from the interior of a country to the coast, as that of the 10,000 Greeks after their defeat and the death of Cyrus the Younger at Cunaxa. · a retreat, esp. a military retreat. Cf. anabasis.
Found on
https://www.infoplease.com/dictionary/katabasis
No exact match found.