Boss Key




 * While "Journeying to the Asura Gate" a key-like symbol appears in the mini-map in the South end, after acquiring the scroll at the symbol near the North entrance.


 * A squad of mobs in a neat 2x3 arrangement is found near that symbol. After the enemies are dispatched there is a drop named "Boss Key". It does not go into your Inventory like other drops, but displays as on-screen text and symbol.
 * At the 'door' symbol further South there is a "Boss Lock" on the ground.