Set Them Ablaze! (Cataclysm)

Objectives
Use the Torch of Retribution on the four towers surrounding the Cauldron. Provided item: Torch of Retribution
 * Western tower ablaze
 * Southwestern tower ablaze
 * Southeastern tower ablaze
 * Eastern tower ablaze

Description
I'm not sure if ye've noticed, but my tower's much taller than any o' the other towers here around the Gorge. Some dwarves pride themselves at how deep they can dig, but not me. Sometimes I think I shoulda been born a Wildhammer.

I still don't like the sight o' those other towers, though. Reachin' up liek that, ticklin' my tower's feet. Here, take this torch, an' use it on the braziers atop those other towers. They'll be sorry they ever built 'em to begin with.

Rewards
You will receive:

Progress
Ye used the torch already, I presume.

Completion
Looks like ye know how to light things on fire! An admirable trait in any, for sure.