Yeah, saw this thing, about pissed my pants. But I was too tired to. He was huge and when he moves he shakes everything which explains his name. I first saw him near the zone(in that little valley before it) to the Valkurm Dunes, and wow he is one freaky ****. I was escorting someone at the time so I didn't watch the "battle" but the guy lost half his hp in a second and just floored it to the zone. If you see this guy take a screen shot he is worth it, lol.