Ring of Trials (WoW)  

The ring of trial is often simply called the Nagrand Arena.

It is located in Nagrand and can be entered in the game world, causing the player to be flagged for Free For All pvp, allowing even same facton players to kill each other while within it.

It is also one of the 3 current possible location for Arena battle.

The ring of trial is better known for it's 4 pillars, which allow players to break line of sigh with each other (often called 'pillar humping'). Most strategic element about this arena involve using the pillars in some fashion, or preventing your opponents from using those same pillars.

World of Warcraft Wikibase™