Can someone explain “Ring Roll”?

[Trelaboon]

So I’ve been on server since it opened, have multiple 60’s but have never had a character I actually cared enough about to do long, arduous quests and camps until now (Paladins rock). That being said I have no idea what the ring roll I always hear about is referring to. What are people rolling on? Can someone explain a “ring war” and what the rolling is for....I’ve been searching the forums but don’t see anything with any real explanation