Dead Rock

Bah, the stench of this place is foul, and I'm not talking about the troll filth. There is a presence in the air. It's unnatural. The rocks in this place are tainted. There's not a single one that I can etch a decent rune on. Only ore staying right is the Oathgold we're here for. It's tough like a dwarf, and so is the stone around it. That stone should be pure enough for my runes. Olfrinson's got me workin' on affairs here in the camp, so I'll be needin' you to brave that mine and come back with some of that tough stone!

Travel south from Thagroth to Oathgold Burrow in the Dwar Galaz Grung caves. Fighting your way through the vermin within, gather the Tough Stones found in the mine. When done, deliver them to Thagroth Grumrune in Olfrinson's Outpost.