Adding to an idea

Against my urge to come up with something new every day, I built on yesterday's "hedge" concept, but this time making them true rectangular tunnels and adding pipes to create alternate types of paths. Solid black was a nice choice, as I just drew the rectangular paths first, then filled in the black pipes over them - no erasing necessary (except for the part that I messed up badly). I might even try adding one more dimension to this concept tomorrow.