872 Construction
The Elven Prince rolled out the plans that they had drawn up for the underground areas of the mountain, and set them out on a flat rock of the ruins.
"This is what we had in mind. Multiple zones of labyrinth with living areas for the feral population and imported monsters. A few underground growing chambers, so they won't run short on resources or food, and some open areas to let them develop as they like.
I know that the feral forest Fae tribes like to make tree forts, and I would assume that the Demons do something similar as well, so they will need room that isn't so structured, but which is enclosed in the underground.
Some of these areas should be suitable for your tribulation, but I will leave that up to your discretion. Honestly, we designed it around our own capabilities, and never expected to have a retired Demon King, or a King Rank Seraph involved in the project." He explained.