The Drought

The Drought, a land where everything has died

The Caverns
The Drought's Caverns look similar to the Crimson's caverns in the fact that they both stick out of the ground but the entrance is diagonal, inside it looks like a giant spiky ball where the Bone Crystals ar scattered about, including floating in the air. If you break three of these Bone Crystals The Drygon will spawn,

Monsters
The Pre-Hardmode monsters consist of:

Bone Walker:

Damage: 22 / 44 (78

Max Life: 40 / 80 (176)

Defense: 8 / 8 (16)

Bone Digger:

Damage: 31 / 62 (54)(head) 16 / 32 (28) (body) 13 / 26 (22) (tail)

Max Life: 100 / 200 (220)(all)

Defense: 2(head) 6 / 6 (12)(body) 10 / 10 (20)(tail)