Right, so this is the fifth book in the Mummy's Mask adventure path. This adventure takes place in a sprawling outdoor maze of huge trenches with lots of small dungeons and outdoor encounters areas. And all that exploring is with the goal of activating a magic tractor team to bring down the flying pyramid (did we mention there are flying pyramids?) of the main villain. It is a major undertaking for the PCs and will tax their endurance.
The adventure actually starts with the PCs defending the city where the entire path starts from a menacing smaller flying pyramid, one of a fleet fanning out over Osirion. This is a fun albeit small dungeon and it foreshadows the big, nasty flying pyramid in the final book in the series.
As with the other books in the series this one has an extra article revealing the background of the ancient Shory empire, who ruled from flying cities. I've been wanting to find out more about the Shory since I first came across them in the Serpent's Skull adventure path. So this was a very welcome inclusion.
The art throughout is excellent, as it is in the earlier books in this series. There are also more magic items, in this case with more extensive background lore. The fiction story continues. I'm not sure I like having bits of fiction in these adventure paths, since it's not why I brought the product, but they are good for getting you into the atmosphere and always include a small map handy for GMing. The monsters at the back were pretty good this time, although I'd probably only use about half of them in my games.
Bottom Line: The overall format of this adventure was a pleasant surprise and the article on the Shory was welcome extra. I'd recommend buying it if you're at all interested.