If you're owner of WI or Qwerxy you can easy skip all the trash and start this encounter (Slabhide)
The reason you should do this is cause the boss drops a mount (Reins of the Vitreous Stone Drake) The mount can drop on normal too, have seen it by myself twice on normal so far and a single on heroric. This boss is solo able on normal with a prot paladin, blood dk tank or feral tank.