Imagine the refreshment of finding water after days of dusty travel. A reliable waterhole hidden at the base of a sandstone bluff made El Morro (the headland) a popular campsite for hundreds of years. Here, Ancestral Puebloans, Spanish and American travelers carved over 2,000 signatures, dates, messages, and petroglyphs. Make El Morro National Monument a stopping point on your travels.

...Excerpt from NPS website