Muddy and murky waters lie under a bridge that seems to go nowhere. It is made of cobblestone and just as long as it is wide. Beneath it live a hideous troll that makes people pay to cross.
Troll's bridge, Swamp
troll
goblin
The goblin lives deep inside of caves far away from the sunlight. The goblin lives on deep cave algae and small critters and bugs that he can catch on the cave floor. The goblin avoids people as much as he can to stay alive.
Ah, so nice to see another creature of the dark damp places. How are you friend? Oy! How're you Goblin? Nice to see a fellow dirty dweller.  Yes it is! Love what you have done with the mud here. It has a pleasant smell. Thanks. I placed the dirtiest smelliest mud here to keep those pesky humans away. Yet, it is nice you take their money to cross your bridge. I wish I had thought of that. I only do it because it is my only means of communication with them. I just want them to accept me. They are always trying to kill me. That is why I make my caves extra scary. Same here. I just don't know how to get through to them that I am not a monster. Yes, I am always concerned for my life. Yet they kill eachother as well. They are the monsters. Yes they are. But I still enjoy their company. Especially the pretty ones. I once heard a story they told about me. They said I ate their babies. I would never! I love slugs and bugs! I would never eat a cute little baby! They think that if they don't pay me I will eat them! But I've never done such a thing. I am a vegetarian!