The Hallowlands

The Hallowlands is a very scary dimension, and, as such, can be disabled in the settings (it is enabled by default). Corrupted Souls spawn naturally here, as do other frightening mobs. The sky of The Hallowlands is a lavender color, which matches the soft blue to lavender terrain. The Murk (Hallowlands water), however, is a dark green. This dimension does have a day and night, and compasses do work, but day is only at light level 6. Hallowlands night is at light level 1. The sun here is bright pink, and the moon is blood red. A Hallowlands Shrine is required to get to The Hallowlands.

Blocks

 * Hallowed Dirt - Purple dirt with lavender grass. Cannot be made into farmland. Requires an Iron Shovel or better.
 * Hallowed Stone - Soft blue stone. Requires a Diamond Pickaxe or better.
 * Hallowed Sand - Lavender sand with flecks of Hallowlands ores. Randomly falls up or down. Requires a Diamond Shovel or better. Very rarely drops a Hallowlands ore along with itself.
 * Greywood Tree
 * Deathly Tree
 * Refinium Ore
 * Corrupted Ore
 * Insanium Ore
 * Vandolvum Ore

Mobs

 * Corrupted Soul
 * Corrupted Warrior
 * Corrupted Boatman
 * Corrupted Master
 * Hallowed Witch
 * Hallowmite
 * Shadow Demon

Bosses

 * Captain Yassal
 * Hallowmite Queen
 * Shadow King
 * Souleater
 * Hallowbrine

Biomes

 * Greywood Forest - Exactly what it says on the tin.
 * Hallowed Meadow - The equivalent of the Plains biome.
 * Hallowed Desolation - The equivalent of the Desert biome.
 * Hallowed Marshland - The equivalent of the Swamp biome. This is the only biome where Deathly Trees grow.
 * Hallowed Castle - A castle as large as a 5x5 area of biomes. Hallowbrine is challenged here.