Pathfinder Map Pack: "Sewer System" [RPG]

I've used the Sewer System map pack extensively in my Curse of the Crimson Throne campaign.  It's perfect for representing the random twists and turns of a sewer system, and contains enough special cards (one with a ladder to the surface, a couple with pipes, one with a partial cave in, etc.) to represent most situations a GM would like to portray.  The detail on the cards is impressive--there aren't clean flagstones and blue water down here!  Instead, there's a variety of debris, rubbish, cracked stones, and so forth.  In short, the "feel" is really good on these cards.  It probably is worth noting that the sewer tunnels in this set are a uniform 3-square width, so GMs who need something narrower for a real claustrophobic feel would be out of luck.  I'd also recommend GMs figure out ahead of time what the effects of sewer terrain will be (are there balance checks to run on the sides, is the sewage channel difficult terrain, are there risks of diseases, etc.)--it'll all add even more flavour to the experience.  Overall, this product is a real winner--I probably use it more than any other map pack.