[Location, Into The Depths] (2)

Head along the path, following the chemical lamps and avoiding hydrothermal vents. The right side of the path near the cliff is recommended.

Avoid looking at the elder cranipod and turn right to find a woman's corpse tied to a rock. Interact with the ghostly image of the cross to place one on her.

Continue on, noticing the wreck of the "Archie" to your right.

Ahead, you will find another corpse to put to rest, but a carniopod is nearby. Carefully interact with the ghostly image of the cross on this corpse to place another, while attempting to avoid the carniopod.

Traverse the open area patrolled by the carniopod, heading toward the glow at the far side.

Interact with the ghostly image of the cross on the corpse by the debris near the glow to place the final cross. This action will remove the "Set of wooden crosses" casebook entry.

Climb over the crate near this corpse and use Mind's Eye (a supernatural ability allowing you to see hidden clues) on the Monolith's growth to dispel the illusion.

Interact with the small tentacle within the growth and examine its base.

This action will return Reed to the house of Jimmy Price.