Repost of riddle.

Held captive within, the four that make all,
Disrupt its eternal rest - withdrawn from its sleep.
A large sacrifice, but rise to your call,
To wreak havoc and destruction so deep.
What am I?


From what we know so far, its a single thing that is made up of four seperate things.
You have to sacrifice something to call this thing

Im guessing that the 'deep' suggests the sea or the crater