Bob Greeneaves is confused by your discoveries among the goblin-camps.
'What those goblins want with the spiders' innards is a puzzle, to be sure, but there's one thing I do know for certain: they are up to no good!
'Maybe if you kill off the spiders, the goblins will go away? There's more than anyone can handle out east of here. The North Moors are crawling with them.
'It certainly won't make any of us sorry to see the beasts dead. You just be careful though.'
There are spiders in the North Moors, south of Dwaling.
Bob Greeneaves asked you to go out and slay spiders, in the hopes that the goblins will leave.
Bob Greeneaves is in Dwaling, north of the North Moors.
You should return to Bob Greeneaves with news of your success.