en_tn/job/28/03.md

A man sets an end to darkness,

This refers to man using a lantern or torch to work in the dark mines. AT: "A man carries light into dark places"

to the farthest limit

AT: "to the farthest reaches of the mine"

obscurity

"unknown" or "remote"

shaft

a narrow underground passage carved out of the rock

forgotten by anyone's foot

Here a "foot" is described as forgetting walking somewhere. AT: "where no one ever walks" (See: rc://en/ta/man/translate/figs-personification)