Waragons Nest is an intermediate grind-zone. Waragon mobs are primarily fought for silver as the silver per hour is very good for intermediate players. The xp here is decent but nothing special. With that being said, this spot is pretty good. If you want better xp Polly's is one of the best spots in the game for xp. 

Waragons Nest is located East of Altinova; Altinova is located East of Heidel the Second major city in Black Desert.