Makuta's Vault is a mysterious area in Mangaia, said to contain the secrets of Makuta's power.
Description
It is a huge, impregnable doorway – with no hinges, seams, or keyhole – that is situated in the middle of the deepest level of Mangaia. Rough maps sketched of the tunnels around it leave a huge cavity empty; the Vault, common sense dictates, must fill this void. A riddle is carved into the Vault’s smooth door implies that it can be opened, though none have yet succeeded:
Across an endless ocean
Beyond where minds can see
My key likes in the open
Where you will never be
Beneath the brightest thunder
Stand towers of the day
The light may break asunder
If night skies choose obey
The red sign on black eyes
Will lead you to your prize
What exactly lies within the Vault is a total mystery - with the exception of Takua, who entered the Vault and stole the Essence Stones, no one has managed to access its contents. However, it is assumed that objects of great power reside there, and how the Vault should be dealt with is a matter of great contention across the island.