Wolfe pulled Mary into a hug and then set her back on top of Pup. "We should get going. It's a shame that we couldn't recover anything from the army unit. The locals out here rely on their leftovers to survive. For that reason, I try not to destroy too much of the gear when I fight them.
Other than that, the Den is an underground camp, like the majority of villages in the Frozen Wastes, because it's naturally warmer underground here. Without the need for extra magic to keep the place heated, it attracts less attention, and the villages without a witch are able to survive.