Ink Pen + GIMP on PC
Pre-publication version - title text to be added.
This was also lots of fun to draw, because of the variety of room types, but again, adding labels and layers in GIMP was surprisingly slow work. One day I'll buy an expensive art package which has a license to use on different computers!
Shadowed Keep on the Borderlands published by Raging Swan Press
(My own maps and floor plans at Inked Adventures