This map is built on version 1.13 for the Java version of the game. As such, it can only be played on versions above that.
The map includes some of the Ered Nimrais around the Deeping-coomb, alongside the Deeping Stream flowing out through the Deeping Wall. It also, of course, includes the Hornburg, the tower with the Horn of Helm Hammerhand atop it, the keep, and the Glittering Caves.
Thanks to all the members of the EpicQuestz Build Team who helped out! And thanks to LimeeFox for the Cinematic & Screenshots.