The scenic North Head Lighthouse is located near the Lewis and Clark Interpretive Center in Washington. It is built on a cliff of lava.

The berm on a Sanibel Island beach after a storm. The berm is the where the average highest tide reaches on the beach. Because there had been large waves from a storm, there was a pronounced dropoff in the sand. Waves move the sand around a lot each year, bringing it in at times and taking it back out to sea at other times.

We were amazed to see this Purple sand on the beach at Julia Pfeiffer Burns State Beach in northern California. We traced it to purple-colored rocks in the cliffs at the surf line.