Beaufort tree

When I walk past a tree with interesting bark or form, it will stop me in my tracks (blame the botanist in me) ... and of course I have to take a picture. This really cool tree grew in the back yard of the house I stayed at in Beaufort, NC, where my friend Karen got married in November. I have no clue what kind of tree it is tho' (Anyone know?). I drew this mostly with a .005 Pigma micron pen and some .03 for shading. I'm pretty happy with it, thanks to Kate who provided valuable feedback as I neared the end.