The riverside can be reached by heading northeast from the Train. Heading further east leads to the Lake.
A metal gate at the north of the river allows the player to access the Sewers, making it one of many possible routes to enter the main city section of Prehevil. It can be unlocked with the Sewer keys, the Lockpicking skill, or broken open in a battle.
NPCs
Karin (Passes through here if followed when she leaves the train on Day 1 Morning)
Olivia: "The Bohemian nature is endlessly interesting! The country is located between different biomes, so the forests here have this unique undergrowth that you simply can't find elsewhere in Europa."