I'm in the process of painting my Descent minis, and have arrived at the Laughin Buldar mini, however I've stumbled across something. Can anyone have a look at the mini and tell me what the thing on his back is supposed to depict?

He's got something slung over his shoulder, resting on his back there and I'm not sure what it's supposed to be, the only thing I can think of is that it's some kind of holder for throwing axes but I'd like people's opinion on the matter.

I always assumed it was a sheath for the larger axe he's holding (maybe even for both). It would have to go in handle first, of course, so the blade hooks over the top and keeps it in place. Axe sheaths sort of have to work differently than sword sheaths, though. =P