Goblin camps!
Random goblins spawn and start a settlement in surface like players. Some really random (but kinda contained) thing, chop trees, make a "goblin claim", build lil huts and hunt and fish around the area
goblin claims doesn't protect against crimes (leave scents) but every "crime" commited in them will lower the goblin relations to your village/character to the point they'll become hostile and will actively attack you if you're close enough
Alternatively, leaving baskets with fishes and stuff like that inside the claim will be taken as "gifts" and will improve relations with the goblins to the point that you could get some benefit or trade or something like that
