Minecraft Dungeons:Crimson Forest

The Crimson Forest is a secret level $$, in the Flames of the Nether DLC which can be accessed through a scroll that can generate within the Warped Forest. This level generates a scroll that, if found, grants access to the Soul Sand Valley.

Trivia

 * This is the only secret level that has a scroll for another secret level.
 * This is one of the only 3 secret levels in the entire game that have a narration at the start of the level. The other two are Soul Sand Valley and Nether Fortress.