Beautiful map! I really like the multiple entrance choices (after crossing over the chasm), and the under and overlapping tunnels. I agree with Bogie that more shading, texturing, and details/objects (like the rocks in the upper right section) would make this even more interesting! The only thing that doesn't look quite right (IMO) is that the torchlight seems to be a bit too yellow. Maybe try to give it a bit more of an orange tint? Other than that, wonderful job so far!