Nether Fortress

Nether Fortress is a generated structure that will spawn in the Nether dimension which will be added in Update 0.12.0. They are large structures consisting of Nether Brick Blocks, Nether Brick Stairs, and Nether Brick Fences.

Structure
Nether Fortresses have a complicated structure with various rooms, including-
 * Lava Well Rooms
 * Rooms with nether brick stairs in the center and soul sand at sides of the stairway containing two 2×5 rows of nether wart growing on it.
 * Rooms with Blaze spawners (normally 2 per fortress), which can have nether brick stairs leading up to them. The rooms also have nether brick fences.
 * Rooms with four exits. Some of them lead only to netherrack.
 * Rooms with a "stairway" of nether brick placed against a wall, leading up to the floor above.

Trivia

 * Nether Fortresses contain various chests in them, containing rare loot such as Diamonds.