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“Autumn Equinox Tour to Los Morteros and Picture Rocks Petroglyphs Sites”

September 22 @ 8:00 am - 12:00 pm

On Sunday, September 22, 2024, join Old Pueblo Archaeology Center’s “Autumn Equinox Tour to Los Morteros and Picture Rocks Petroglyphs Sites” with archaeologist Allen Dart, 8:00 a.m. to 12:00 noon. This tour will depart from near Silverbell Road and Linda Vista Blvd. in Marana, Arizona.

The 2024 autumn equinox occurs on Sunday Sept. 22, 2024 at 5:44 am Arizona/Mountain Standard Time (same as Pacific Daylight Time; 12:44 pm Greenwich Mean Time). To celebrate the equinox day (but not the exact time!) and explore ancient people’s recognition of equinoxes and other calendrical events, archaeologist Allen Dart (Old Pueblo Archaeology Center’s executive director) leads this tour to Los Morteros, an ancient village site that includes a Hohokam ballcourt, bedrock mortars, and other archaeological features; and to Picture Rocks, where ancient petroglyphs include a solstice and equinox calendar marker, dancing human-like figures, whimsical animals, and other rock symbols made by Hohokam Indians between 800 and 1100 CE. An equinox calendar petroglyph at Picture Rocks exhibits a specific interaction with a ray of sunlight on the morning of each equinox regardless of the hour and minute of the actual celestial equinox, so participants in this tour will see that sunlight interaction with the calendar glyph unless clouds block the sunlight.

There is a requested donation of $35 ($28 for Old Pueblo Archaeology Center and S’edav Va’aki Museum Foundation members) supports Old Pueblo’s education programs about archaeology and traditional cultures. Donations are due 10 days after reservation request or by 5 pm Thursday September 19, whichever is earlier: 520-798-1201 or info@oldpueblo.org.

Flyer: 20240922(v1)LosMorteros&PictureRocksAutumnEquinoxTourFlyer

Caption: Equinox “sun dagger” on spiral petroglyph at Picture Rocks site, Pima County, Arizona, photo by Tom Herrick


September 22
8:00 am - 12:00 pm
Event Category:


Allen Dart


Silverbell Rd/Linda Vista Blvd

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