I had a nice spot at the edge of a mountain/black forest/swamp merging area. I was fighting an abomination just as night fell and a wraith spawned (still using bronze gear with an iron shield at that point). I retreated out of the swamp and into the black forest fighting in retrograde and backed into a 1 star troll and one of the nighttime graydwarf swarms.

The gray dwarves attacked the wraith and the troll attacked the abomination. I stepped to the side and watched the fight not paying attention to what else was happening. About halfway through the fight a nighttime swarm of wolves came down from the mountain and wiped out every thing.... including me.

I respawned in my base. slept to let the night pass by, ate food and portaled back to the closest spot and walked to the scene of the battle. I picked up my corpse and gathered all the sparkling stuff. The night time wolves had despawned but they had killed every thing before that happened.

I also have a spot that has a dragur village right next to a fuling village. I'll climb a hill in sneak mode and watch. Every 3 days the fulings and dragur will respawn and then fight it out. The dragur will win because there are body piles in the dragur village that will continue to spawn dragur.

They don't attack the buildings so the fight lasts until all the fulings are killed and then I just sprint down and collect all the sparkling stuff laying on the ground.

When I first discovered it I was using iron gear and a troll cape.

https://steamcommunity.com/sharedfiles/filedetails/?id=2846928091

They are still respawning and fighting when ever I go visit even though I now have padded armor and black metal weapons and shield.

https://steamcommunity.com/sharedfiles/filedetails/?id=2874989013

I lived on the free sausages for a long time and wound up with an entire chest of black metal scrap long before I found Moder's altar.