Thunder in the Hills

Some of da boyz been sayin' that dere are stunties wot are standing by da roads out o' here, waitin' ta shoot at boyz as dey pass by. Dey say it's like thunder from da hills, and all da boyz end up dead! Dis Waaagh! is finally done wif crazy humies and can get back t' da stunty smashin', an' I ain't goin' ta let dose stupid stunties stop us! So, youse goin' ta smash dem before we move out, so da Waaagh! don't get stopped again! When youse done smashin' 'em, you let ol' Snik know dat it's done. Dat way, dey can start gettin' ready for us boyz ta get dere!

Travel east toward the advance greenskin camp in Thunder Mountain. Defeat any Oathbearer Thunderer you come across as you make your way there. When you have cleared out the enemy, report to Snik at the advance camp.