Desert pyramid

Pyramids are a type of structures that occurs naturally in desert biomes as of the snapshot 12w21a.

Appearance
Pyramids mostly consist of Wool, Sandstone, Chiseled Sandstone, Smooth Sandstone and Sandstone Stairs. In the middle of the Pyramid is a blue wool, underneath there is a 'secret' chamber with 4 chests which contain very valuable loot, and a stone pressure plate connected to a 3x3 grid of TNT. Some treasures found in Pyramids include Emeralds, Diamonds, Iron Ingots, Gold Ingots, Rotten Flesh and Bones.

Treasure
The pyramid is now the most valuable structure the game generates, as each pyramid contains 4 chests with highly valuable items. The colored wool, and 9 blocks of TNT in the trap are also fairly worth while loot.

When attempting to access the chests the player must take care not to step on the pressure plate at the bottom of the pit. Just below the sandstone are 9 blocks of TNT, touching the plate will doom the player (unless properly protected) and the content of all the chests. It is ill advised to enter the treasure chamber by breaking the blue wool, or any of the eight surrounding blocks. Instead it is best to dig down to the side, and then break the pressure plate when it comes into reach. Luckily the plate is stone, and will not be triggered by falling items, but be careful not to attract a mob down the hole (unless you have already removed the treasure). Also, remember to collect the wool and the TNT as both are valuable.

Locations
One can be found on the seed '2723252156358377690' at x:-277, y:67, z:-208. A second one is found near a desert village on the same map at x:-422, y:70, z:-671 (contributed by papapatoto).

Pyramids can also be found buried in sand, as if they were Abandoned. (Seed: '2025899048' at x:-460, z:680)

Another one can be found on the seed 'Desert' at x:212, y:71, z: 330. It's half-buried in sand. You can also find a mobspawner on the surface (x:253, y:63, z:182) next to a NPC village with sandhouses(x:257, y:70, z:111) (contributed by 1addy1)