The encounter in question is Spine of Deathwing, the second to last encounter of the Dragon Soul raid in Cataclysm. If you are struggling to solo this encounter, here is how you can complete it.

Blizzard has announced that a coming update to World of Warcraft: Classic re-introducing the fiery Cataclysm expansion will ...

Prepare to step into the time-warping portal of Azeroth, as WoW Classic brings back the earth-shattering expansion, Cataclysm ...