Mineshafts

Mineshafts are rare structures (1 in 10,000)

Image of a Mineshaft

The mineshaft's loot can be any ore that spawns at the depth it spawns, including rare ores and special depth ores. (other than stone) The zombies all take 1 hit to kill, and to obtain loot from the chests, you have to mine them. The mineshaft itself is made out of Wood, Light, and on some occasions Ladder Bricks. The mineshaft's shape is usually like a snake and its size may vary.

An example of a rare ore dropping from a zombie