Shadow Chest

The Shadow Chest is a storage item found only in the Underworld, generally on top of or within an Obsidian tower, and contains rare items. All Shadow Chests are initially locked, requiring a Shadow Key to open. A single Shadow Key will open unlimited Shadow Chests (unlike Golden Keys, which are consumed upon use). Each Shadow Chest contains one high-tier item of "Orange" rarity, along with other standard Underground loot.

Like all other naturally-occurring Chests, Shadow Chests can be freed with a Hammer after being emptied, and picked up by the player for placement and use elsewhere.

History
Contains some items previously dropped by Underworld enemies.

In the Xbox 360 version,if you go near it it will kick you out