Hydra lairs are small hollow hills that spawn in swamp biomes. The structures are relatively rare, and are the only place hydras can be found.
Appearance[]
The lairs consist of a dome-shaped mound of dirt, with grass blocks on the top. Trees and flowers can generate on top of the lair as they do elsewhere on the ground. Inside the dome is a Hydra. There may also be mushrooms, skeleton skulls, oak leaves, and chests scattered on the floor.