Your map is quite nice. However, if its going to be a pc map, is it one that they will have bought or found? If so, I would go for a parchment or pen and paper look that resembles something like these two maps of dwarven complexes: http://www.cartographersguild.com/sh...ighlight=mines and http://www.cartographersguild.com/sh...ighlight=mines. As for the symbols, I thought they were pretty good, however what is the symbol at the top of the map supposed to be? Also, I drew a blank on the dwarven symbol until I actually read your description of what it was supposed to be--the other three symbols are pretty obvious (although I immediately think "Drow be here" when I look at your underdark symbol). Also, you may want to change the colors you are using to make the symbols stand out or pop a bit. The color scheme isn't bad, but it is a bit drab. What is the difference between the white passages and the more darkly colored passages? Also, you don't want to overlabel, but you have clearly delineated areas on the map that are not marked. For instance, what is the hammer hall at the top of the map? You may want to either clearly mark those areas or blur them out as you have done with other passages. In any event, the map holds a lot of promise. I hope your players have a great time.