Mr. Neal's work is an homage to the classic B2 Keep on the Borderlands module from yesteryear. There is a complete town to start your adventures in, a wilderness area to explore with multiple encounters and of course a cave system filled with various denizens and adventures!
I'd say there is actually more adventure in J.D. Neal's work than in the original!
If you are looking to start a campaign this is a great resource to start with, and it could be dropped into Robert Conley's Blackmarsh setting to start an entire campaign!
Note, some of the spells in Chaotic Caves require the Magi Carta or you could always just make it up! Use promo code SUPER20 this weekend to get 20% off all my stuff on Lulu.com (Not sure if that code works in all countries, sorry)