This version of the Arena is a new location first introduced in Monster Hunter: World.
A large circular arena located on the outskirts of Astera. It features a massive metal gate that can be deployed to separate monsters from Hunters or even other monsters, as well as several net-covered pillars that can be climbed to allow combatants to perform aerial attacks.
The Arena is accessed via a partially beached ship that serves as a camp for Hunters preparing for battle.