Colloseum

[Danijel]

There is a section at Ridorana Cataract (outside the Pharos) named Colloseum. Can someone tell what is it for?
I think you fight boss there, but which one?

 

[BustaMo]

After you defeat all of the other Hunt Marks in the game...#45

Spoiler

Yiazmat

is there for you to battle. Yes, he takes up all that room in order to fight.

 

[Danijel]

Thanks!