How about a super creepy place for a monster or bad guy to make their home in the swamp? For me, this overgrown mangrove/banyan clump has become home to a nefarious swamp hag who's been performing creepy rituals on creatures she's captured (including adventurers?) leaving them maimed and deformed, but why? Outfit the den yourself or use the furnished map versions I have included. Plus assets to cover the den!
[50x50] Grid and Gridless Versions