Explosive Solution

I'm da Orc in charge o' smashin' dem stunties in dat stunty hole. Dey dig tunnels in da ground so dey can pop out o' da ground 'neath your feet! Dat ain't no way to scrap. If dey want a proper fight, we'll give 'em one! Since dem Morkfang Orcs ain't followin' Grumlok no more, we's gonna kill 'em for their burnrock an' kill da stunties wif' it. Take dis 'ere bag an' fill it full o' da burnrock! Den come back 'ere and stuff it in dis 'ere barrel an' make sure ta blow da stunties up wif it! Dem Morkfangs is up dere, dem stunties is down dere an' da barrel fing is 'ere. Wot're ya waitin' on?

Follow the road northwest out of the Red Dust Camp. Kill Morkfang Greenskins and claim their supply of burnrock to fill Bazrag's bag. When done, use the barrel in Red Dust Camp to seal it, protecting yourself from the noxious fumes.