Sooooo... I'm kind of into tree bark...
There is so much texture, shape, depth, and character. Every time I walk around my neighborhood, I always end up stopping to stare at the tree trunks, and their ever changing, growing, developing bark. Since the trees can't move from place to place, their complex history pushes its way out through the bark, bit by bit, slowly shifting its external landscape... or at least that's how it goes in my imagination...