The hole in the ground is called "Angband". It is not a nice hole. However unpleasant a hole you are imagining, it is probably worse than that.
The orf knows how to live in this hole. If she waits until the blacksmith from division 209 is in a good mood she can sit in her smithy and watch sparks fly, bright and hot against the darkness. If she's well-behaved and submissive and quick and clever she can pretend to be an Elf, a real Elf or an imaginary one, for some hapless prisoner whose plot arc needs more personality diversity or a few extra facial expressions in a crowd scene, and get memories of that Elf or at least a skeletal backstory and add precious songs to her repertoire. If she goes down this staircase when a mission's gone well then she can get roughed up by Weird-Ear's squad and look battered enough that nobody else feels obliged to make up the difference for a week, but Weird-Ear doesn't mind getting her turned on first so it's much better than running into somebody with more refined sadistic tendencies. If she goes up two floors and over half a mile of dicey corridor navigable only by copious mindreading she can visit the spot where her mother died, but she doesn't usually do that. If she gets a scar that doesn't seem like it'll fade she can get a bit of the kind of white rock that makes scratches on the black stone of the fortress and show the tattoo artist from division 447, three hours' walk away, how she wants it neatened up and colored in or scarified - she's got a waterfall of overlapping circles burned into her shoulder, spirals up her calf, a field of bowing wheat scratched in over the whip marks, shooting stars down her temple from when she visited the blacksmith in a bad mood and she grabbed her by the hair and held her face near the sparks till she'd apologized enough.
If she goes alllllll the way up, and avoids the guy who likes feet who'd make it hard to walk back and avoids the Balrogs who are too hot to even get near and avoids the entirety of division 192, she can find Thuringwethil even when they aren't working on the same hallucination together! And she can bow very very deep.
She sings her the improvement to the magic song.
She goes allllllll the way back down. She pays an installment on the baby-switching help she needs. He's still not planning to betray her, what a nice boy.
She finds an out of the way Elf prisoner. She sings. Yep, unremarkable orc, that.
She pays careful attention to available parts.
The illusion will cover the bitten notch of the baby's ear but her mama can feel it. She can sob over this baby about her missing husband so very, very convincingly. She is so sad.
The prisoner actually does look at her - looks at everybody, all the time, and is visibly concerned if they're out-of-sorts with less excuse than a dead husband. She can see why it'd be hard to get things past him and why they've had to keep starting over.
The Elf is confused but unresisting and in any event too injured to put up much resistance. There's an outcry. People are told to stop her and the outcry turns into a general fairly bloody melee everywhere within hearing distance.
Up the stairs up more stairs out the big doors she has to kill four people to get to them she recognized that one never mind her baby is squirming around in her shirt and the Elf is heavy on her back and she runs and sings and gasps and runs more and sings more -
Generic orc generic orc definitely allowed to be out here on patrol on a mission something just some orc no specific orc -
Macalaurë'd know how to do something for speed and exhaustion without some nasty interaction with what she's got. He isn't sure - yet - he listens -
...persons responsible for the prisoners are unsure if this is another rescue scenario which no one was informed about so they'd act sufficiently surprised, or if someone actually randomly grabbed a prisoner and ran away stabbing people.
They don't really want to ask Sauron.
After a bit they get up the nerve to go ask Sauron anyway.
He starts quietly singing along with her.
All orcs are ordered to cease moving immediately.
" - you're not -"
All parties aware of the location of the prisoner are ordered to inform me immediately without moving.
- he was prepared to have to do something, at that one.
Everything for ten miles around goes utterly impenetrably black.
The jostling is extraordinarily painful even with a new reference point for that. He keeps singing. Energy and balance and swift movement, that seems like the thing. He checks prospects for being able to walk.
He is definitely not going to be able to walk.