Wow, this one took a while, but the level 3 map has been converted into CC2. I need to do a bit more with the underground lake-cavern, maybe drop some islands or a few more side caves in - it's pretty bland right now. Other than that, though, it's pretty much good to go.
The map is too big to print to a single page, so I'll have to split it into pieces in the printed module. Photobucket can't deal with the high res image, so it's a bit illegible, but click to embiggen anyways:
And here's some detail on the tunnel section to the west:
And here's the entrance from the outside:
And here's the underground lake: