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Please join CDAS Archaeology Technicians John Downing, John Case and Site Steward Laurie Brindle for a half-day trip to the Blair Valley Pictographs and Morteros archaeological site.

Online registration is now closed. If you'd like to sign up, please visit the CDAS table at the ABDSP Visitor Center on Saturday, where you can register in person.

The exceptional Blair Valley pictographs are associated with the Kumeyaay People, who have lived in this region “since the beginning of time” or at least for the past 10,000 years. Come with us to view this notable native rock art site that features diamond chains, zigzag lines, sun rays, and other seemingly abstract patterns. Although no definitive dates can be established, these paintings, created using natural red pigments, are thought to be between 200 and 1,000 years old. It is human nature to try to interpret the meaning of this rock art. Some say shamans did it, others think it may have been associated with puberty rights, and still others believe they may have been directional sign posts or have celestial meanings. The quest for understanding the past through what others have left behind continues.

We will meet at the Park Visitor Center at 8:00 am and carpool to the Blair Valley site via County Route S3 to Tamarisk Grove then west on State Route 78 to Scissors Crossing, then south on SR-2 approximately 5.9 miles then left on the Blair Valley turnoff. We will stop at the restrooms to make sure all are following, then proceed along a rough, washboard road to the Pictograph trailhead in Little Blair Valley. Time permitting we will visit the Ehmuu Mortereos Site.

Limited to 15 people - $10.00 fee. Please be prepared with suitable footwear, hats, sunblock, warm clothing, your own water, and food for lunch. The field trip will conclude back at the Visitor Center at 1:00 pm.