Destroy the Siege Weapons!

Objectives
Destroy the four mantid siege weapons at Sra'vess in Townlong Steppes.
 * Large Southern Siege Weapon destroyed
 * Small Southern Siege Weapon destroyed
 * Large Northern Siege Weapon destroyed
 * Small Northern Siege Weapon destroyed

Description
The mantid don't just attack in swarms.

They're smart. They use alchemy, bombs... and what's worst, they've got siege weapons. Those have the potential to be incredibly destructive if they attack with them.

We've got reports that they're building up a force of siege weapons to the west at Sra'vess. Go and destroy them.

Rewards
You will receive:

Progress
You need to take out those siege weapons, !

Completion
Those siege weapons won't be a problem. They may rebuild, but we've bought ourselves some time.

Gains

 * 236000 XP
 * +250 reputation with Shado-Pan