This is the location of the main gates and the only way for anyone to enter or exit The Great Library. Because of this, and after an assault from Morgoth, the Entrance Hall has turned into the most heavily protected location in the library. Even if someone forces their way to the gates, it can only be opened with the Master Key. This also serves as the hub from which one can travel into the Stacks and function as the main HQ of the Guardians.
