I often think about paintings in layers. There are stages where the paper shines through (to create a moon, perhaps) and layers where the pigment lays thick and velvety. It is a constant play of adjustment. Towers such as these in Monument Valley have been through 50 million years of erosional activity. We only see an infinitesimal glimpse of what they have been on their journey. This desert was once a shallow blue sea, rich with marine life.