Pegasus

...woodgraphy.

The way the dark grooves contrast with the scratches and grain of the wood is nice.  I can definitely see the horse in the grain - very dynamic.  The overlying square is similarly dynamic and contorted, unlike the rather static constellation.  It also appears that Pegasus is in a gray storm cloud, because the edge of the tree trunk is shaped like a cloud, and the wood texture looks turbulent.  Appropriate, given Pegasus's association with lightning and thunder.  It all came together in this piece of wood, and you had a great eye to see it.  An excellent shot.

What an eye you have...and of course a vivid imagination without which this would just be a cut stump. I can't improve on Mark's comment so I'll just nod in agreement.