This was an attempt at recreating one of the maps from the great "Sprucecape Chronicles" map pack for Half-Life 2. (you can check it out for yourself at www.runthinkshootlive.com/posts/the-sprucecape-mod/)

I've set it up to play like a small adventure map in the world save, and a place-able loot dungeon in the schematic - you'll have to figure out how to add an entrance point as the intended player start is in the caved-in tunnel near the roads. You're free to use this in anything as long as you give me credit. :) You could remove the zombie spawners and use it as decoration, make it part of your own adventure map, or just put it somewhere in your survival world to have a neat place to explore and get some loot from.