I think this is sort of a hidden oasis with a spring and a pool in a bowl on a hill, since the vegetation away from the water looks like dry scrub. There is a secret approach trail up the dry stream bed. I do not remember what I was planning, but I still kind of like it.
Gotta figure out how to rotate images in blogger. CSS, or is their a GUI trick to it?
Anyway, the siege tunnels on the map above are located on this map, I think.
Zershene was typical of the smaller dungeons from the campaign after I scrapped the 10 squares to the inch megadungeon from the first flush of learning. Four compact levels on one sheet. This one saw a lot of play.
This last one, the Mountain Troll Lair, was effectively a one page dungeon, heavily keyed right on the map, probably from either my 80s 10 year anniversary OD&D game or intended for a 3rd Edition game. Either way, I don't think I ran it. It might be a fun one to redraw in inks.