Let's Play Eye of the Beholder 16: Displacing Bravery
If you want some music to play on loop during the drow level, I suggest this as a good starting point:
https://www.youtube.com/watch?v=Luh3VJUEwuk
The party have certainly run their fair share of gauntlets so far but there's still a lot more peril in their future. Hellhounds may be bad but there are far worse threats as we descend deeper. The Underdark has horrors that could obliterate the party in a free action if given the chance and I'd say we're pretty deep underground by now. Mind flayers and umber hulks are just two I thought of off the top of my head and they're bad enough. Unfortunately, the deeper we go the more likely we'll stumble on an area easily connected with that dark place full of terror and death.
Let's just hope we don't find any of those monsters as we travel even deeper.
One things for sure regardless, it's only a matter of time before I come across a monster I misidentify. I haven't played many campaigns that have descended into the Underdark and with the AD&D monsters looking so different from what I'm used to seeing, I'm sure it'll happen eventually, I've been rather fortunate that it hasn't happened since near the beginning. When it does, I'll be sure to put up an annotation correcting myself.