Book of Lairs
Back in 2014 I started a Patreon site to support the creation of a generic fantasy Book of Lairs, using the Adventurer, Conqueror, King System RPG (ACKS for short). Took a year before it was finished and published, and soon after I started working on a second book, the Book of Lairs: Urban Encounters, which was completed last year. I then started on a 3rd Book of Lairs: The Vale of the Iron God.
All are now available to buy.
Below I have placed the maps from the three books here for personal, non-commercial use in your own games. I hope that they come in useful.