The module is 32 pages if you include the front and back cover. I counted eight interior illustrations, one handout and three maps in the same 'artistic' style as the maps for the adventures in the core rulebook. The PDF is fully bookmarked.
The People of the Pit is designed for a party of 1st level characters. The adventure involves a pit, dark cultists and tentacles. I don't want to say more in a spoiler free review. The dungeon consists of more than 50 encounter areas spread out over four levels. The dungeon is a 'living' dungeon with a rationale (in fantasy RPG terms at least) provided for the contents and inhabitants of each room.
The dungeon does include a few traps and secret doors but not so many as to be annoying. There is also one puzzle that is designed to challenge player and not character skill (and looks like it should be fun). There are several clever touches in the module, including a unique method of traveling from level to level that could possibly allow the PCs to skip most of the dungeon and end up at the end encounter! (which could prove deadly)
The writing of the module seems solid to me and I was able to comprehend what was going on in each encounter area with the first read through. I haven't found any errata yet. The People of the Pit looks like it should be a blast and I can't wait to run it for a group. And where else can you go swimming in a pool of pit-beast poop?
[4 of 5 Stars!]