I was looking at a set of dungeon geomorphs a few days ago, and thought about drawing something similar myself, just to see how they'd turn out. So, I drew these in my free time. I'm pretty happy with them, so I think I'll keep drawing and see how it goes. Maybe I'll complete a full set, time permitting.
The first two are 10x10 tiles, 1000x1000 pixels total. The hallway ones are all 500x500, or 5x5 tiles. Same resolution as my normal maps.