Based on your scouting, the outpost looks like this...
Screenshot_20190326-122742_Chrome.jpg (70.52 KiB) Viewed 4307 times
Barracks area includes two caves for regular guards, and the kitchen/ dining area, and two stalactites hollowed out to make senior guard rooms. Between the two stalactites is a winch-powered basket which descends down into the darkness.
The T is the temple, carved from a stalactite
G is the guard room carved out of a stalactite where they watch you in your cell.
There is a cave for the quaggoth near your cell.