These are ancient rock paintings. They are said to date back thousands of years. They are not petroglyphs. The designs are painted on the rocks and are very fragile. Some of them have faded are are difficult to see. The rocks are located under a huge ledge in a canyon near Sedona, Arizona and are part of a National Historic Site. You might have to click on the image to see all of the paintings. They are relatively hard to see, even if you are there in person.