Blackburn Cove is a den of Bandits and Pirates located in the Southern Shelf - Bay area. It's a rather large multistory camp of Bandits with additional boats out in the water. There's a lot of loot to be found in this camp as well as a unique boss encounter at the top with Midgemong. To enter the camp, you'll have to fight your way through a couple of Bullymong nests and traverse a set of mechanical bridges.
This camp and Midgemong are part of the mission "Symbiosis"