Old School Heretic

Random Caverns Produced by Gozzy's Random Cave Generator
http://www.gozzys.com/article.php?cm_id=11

Over at Gozzy's Cartographic Emporium, there is a nifty Random Cavern Generator that we used to produce the map up above. The generator gives you a few choices in terms of number of openings, background, floor type, whether or not you want an overlay grid, and size. It's a very nice, and very handy tool, and it's free, so why not give it a try?