Petroglyph National Monument
The day before we left New Mexico we squeezed in one more park to add to my National Park Passport book (this one made 6 on this trip!). Petroglyph is a bit confusing because it is a 3-part park and the visitor center is not near the petroglyph areas.
The petroglyphs were marked on volcanic rock by the local Native Americans several hundred years ago. Later, Spanish explorers left their mark on some of the rocks too.