Save Point + Shortcut to Newport in Pyramid Desert Zone

Exactly.

But with regards to the level:

A very level-appropriate area  (Mines ~60+? ... for some current PCs) naturally exits to that general area.   So while PCs may not be successfully going in the 100s locations, they very well might just make it to that particular spot if they are careful  ...which means it can't hurt to stick in a save and return path long before you get those 100s fully fleshed out. Simply as part of the Through-The-Mine adventure.

It's true that it is a very difficult challenge going out the back door - if you don't return quickly enough or you actually get to the pyramid desert and want to come back.  Eventually I got to the Pyramid area by fighting or guile...and most certainly with full respawns awaiting by the return time (Given enough available time and mood for suicidal exploration).

Which reminds me, iirc the mines had one or 2 metal nodes but no general loot nodes at all.  I ran it for a bit of hunting xp for the particular beasties; it's very slow going...and very dangerous - so it might deserve a general node or two.