Dragonblight is the central quest hub in Northrend which makes a reappearance in Cataclysm as the backdrop for Dragon Soul and Hour of Twilight in 4.3. It’s an icy valley, covered with the bodies of dead dragons. Players learn about two major plotlines here: the dragonflights at Wyrmrest Temple, and the Wrathgate plot, which has very different stories for Alliance and Horde.