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
fighters
I am a fighter.  I fight in battle in the name of the king.  I will not fall before any man or beast.  I am brave!
Hello troll. I will battle you to the death now for the grace of the king! Fist goes onto fighter's head! You go asleep now! This mud will blind your eyes. Now I will fight dirty just as you do with this innocents you make pay to cross the bridge over this cesspool body of water. I run good business! Fair trade! There is nothing fair about a troll and his muddy dirty waters you fool. Now die! Please, I attack out of fear...I am not mean! I just earn a living.... Oh? What is it that you are afraid of there troll? I fear hunger. I need something to eat. Business is bad. Well I did not know that you were so hungry. My apologies. Perhaps we can cross the cobblestone bridge and bring you some food back. If you would like us too... Sure. That'll be 15 gold. We have just come back from a long battle and do not have the 15 gold. Can we give you 5 gold and return with the rest, along with food? As long as you promise to tell people I'm not mean.