Soon thereafter, he discovers a giant underground base, crawling with soldiers and massive mechanical weapons. (completegamereviews.com)
For Katniss, it's important that the rebels not stare so long into the abyss that they become what they have beheld; when others callously plan to bury one of Snow's underground bases with an avalanche, it's Katniss who insists that one tunnel be left open so that civilians can escape and soldiers, if they choose, can surrender. (thewrap.com)
You start with a barebones underground base, and excavate deeper to create new rooms. (pcgamer.com)