Morro Rock, is the 576 ft. tall plug of an extinct volcano and is one of a series extending for many miles inland. In the winter, the sun cuts across the rock face at sunrise and illuminates the rock and sand ripples perfectly. This low sun angle is the only way to show fine detail in the sand. It only lasts for about 3 minutes, so I had to work fast. A low tide also exposed just enough sand while keeping it wet for the best effect. I liked how the sand ripples pointed in the same direction as the layers of rock.