Quest: Clear out Cragmaw Castle

Quest Giver: Sildar Hallwinter Reward: 500gp
Details: Sildar Hallwinter and his friend and your employer Gundren Rockseeker were ambushed by goblins between Neverwinter and Phandalin. Though Sildar was rescued it was discovered Gundren had been taken to a location known by the goblins as Cragmaw Castle. Along with rescuing him, the castle seems to be the main base of goblin activity in the area - clearing it out will make the roads to Phandalin much safer.