Confluence Boards

Confluence boards are in-level copies of the textures used for the images used in Confluence. They're believed to exist in every level up to the Tower level, and are typically found toward the north-west OOB area.

The exact same board is used for most history lessons in Confluence, with the main exception being the Tower level, which has two new boards for your story: one for single player, one for playing with a companion. Tower also has another, dummied-out Confluence board from the beta, which isn't known to be used anymore.