This book combines the Compiled Basilisk Hills cluster with the Supplemental book, creating a hexcrawl region of 107 total 6-mile hexes.
Supplemental Hexcrawl Consisting of 98 6-mile hexes that surround the main Basilisk Hills cluster, this supplemental book provides enough dungeons, lairs, and interesting features to keep your players exploring for months of game time.
Written for Old School Essentials, but useable in any old-school system, the book also contains background on the world of Absalom as well as tips on how to run the hexcrawl.