This is a section of the gnarled roots of a very large native pecan tree in the Tulsa Garden Center Arboretum.
I like the look of it rendered in black and white. When I started taking photography seriously in 1965 I shot everything in black and white. I had a Pentax Spotmatic with an F-1.4 lens and I used tri-X mostly to allow decent available light photos. Since migrating to the digital age everything is shot in color and what used to take hours in a dark room now takes minutes on the computer.
Recently some of the blogs I admire have encouraged me to go back to rendering photos in black and white. Converting the digital color image to monochrome is a little more than a one click process. Getting the balance and contrast just right requires some doing.
You might ask why one would want to convert a color photograph to sepia or black and white. Consider the magnificent photographs of Ansel Adams and ask if they would be as powerful in color. A monochrome photograph lets us see textures in a way that color does not, and gives emphasis to the larger composition without the distraction of blocks of color. In the end it is probably a matter of personal taste and I admire a well rendered monochrome photograph.