Quote Originally Posted by wormspeaker View Post
Visual appeal takes a back seat to functionality on a battle-map, but I think there are a few things that can be done to make the tunnel look a little more natural. One would be to make it less of a straight North-South run and instead make one end a few squares to the left.

Also, you can indicate the navigable squares separate from the visual background like so, allowing you more freedom in the outer shape of the walls.

If you are using D&D, diagonal movement is allowed so the below image is tactically sound.
Ah, I get ya. Thanks mate, I'll think more about that in future! Ta.