From the publisher:
This exciting accessory will help busy DMs to build their own adventures or dungeon crawls.
The book presents all the material you need to write an adventure actually without the adventure itself. If you need a dungeon ready to throw before your players or if you need a solid platform to build your own detailed adventure, Goblins' Lairs will prove very useful.
The accessory includes:
Maps: From the simplest outpost to the huge dungeon complex. For each dungeon or building you will get: a line art map, easy to print with minimum ink waste, a color map with its black and white version and, where needed, perspective and axonometric views. Each map has blank spaces for your numbers and notes. Intelligent text fields allow you to change the maps with minimum effort. You can extract, print and modify the maps as you desire: the PDF file will not be protected.
Handouts: Several handouts are provided: the old book, the treasure map and the like. Some handouts are left blank for your customization.
Monster Stats: Your dungeon crawl needs critters. Dozens of goblin's stat blocks are provided, from the simplest goblin warrior to the multiclassed sorcerer-king of the goblin tribe. You can cut-and-paste and modify these stats for your own adventures.