Dairy cows graze on farms that sprawl across the twisting roads of the Point Reyes Seashore nature preserve. The words on this sign warn us of potential obstacles in the road. Although there is not another car in sight, we must proceed slowly. Very slowly. I build this image around the curving white lines that divide our territory from the bovine domain. The road carries us past the three subjects that stand to the right of it: a rock, a cow, and the words on that sign.