Waves crash forcefully into a rock formation off the California coast year after year with no visible effects. Strong and firm, the rocks remain trusted seaside monuments. To see all the other images in today’s monochrome challenge, go to Leanne Cole’s blog.
This rock tower standing against the Wyoming sky is believed to be the result of igneous rock being thrust upward by the force of magma. It first appeared as just a mound of earth. But as the outer layers of softer rock eroded over many years, the gray columns of the tower took shape. To see more entries in this week’s challenge, go to Leanne Cole Photography.