Wall of Fog

Exploration Stage: Foggy Backstreet
From: Mr. Black
Description: Now we need to take a deep breath, press ourselves against the wall, and carefully squeeze through. The Foggy Backstreet starts right behind these ruins. I hope we find Carlos before the openeing is completely shrouded by the fog. I'll go first, and you follow me. Let's hurry!
Completed: We're here! Wow, there's even light in some windows I thought there was nobody in the Foggy Backstreet but scavengers! Look, this is the dilapidated bridge mentioned in the letter. I can't figure out, is there a dead end at the end of the street or a thick wall of fog?