Sewage

The Sewage is the eighth area in Marrow.

Description
The Sewage is directly below the Laboratories. It is a long, murky tunnel with pools of marrow covering the bottom. Several invisible platforms span the length above these pools of marrow and can only be seen when one of the torches scattered throughout the level are lit. Falling into the marrow will send Daniel to the Echo Realm and damage the player continuously for as long as they are standing in it. Within the Echo Realm, walls appear to block the player's progress until they revert and manage to traverse the platforms without falling in. The marrow in the rightmost level of the first part of the Sewage will instantly kill the player if they fall in. Several Taken, Seekers, and Wallows stalk the Sewage, as well as several other enemies.

The main goal of the Sewage is to knock down the ferry at the topmost level and use it to cross the river of marrow and reach the other side in order to access the Malignancy. In order to free the ferry, the player must attack the chain holding it up, and defeat the Guardian that appears afterwards by smashing the mirrors on each wall of the arena. After boarding the ferry, Daniel will be attacked by The Cloven

There is an Orphan hidden within the Sewage that can only be accessed after striking a hidden Red Harp. An image of a demon encircled by stone will flash and a timer will begin. A Vicar will start following the player through every level until they reach the original image of the demon. If the player has pressed the switch by dropping down from the right side of the area above and the timer is running, the player will be able to jump down through the floor directly below the demon.

Below the Sewage is the entrance to the Red Tower.