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

March 20, 2022 @ 8:00 am - 12:00 pm

TOUR FULL – WAITING LIST  On Sunday, March 20, 2022, join Old Pueblo Archaeology Center’s “Spring Equinox Tour to Los Morteros and Picture Rocks Petroglyphs Archaeological Sites” with archaeologist Allen Dart, departing from near Silverbell Road and Linda Vista Blvd. in Marana, Arizona at 8:00 a.m. The tour will end around noon. There is a requested donation of $35 ($28 for Old Pueblo Archaeology Center and Friends of Pueblo Grande Museum members), which helps cover Old Pueblo’s tour expenses and supports its education programs about archaeology and traditional cultures.

The 2022 spring equinox occurs on Sunday March 20 at 8:33 a.m. MST (Sunday March 20 at 3:33 p.m. UTC). To celebrate the vernal equinox, 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 mostly Hohokam Indians between 800 and 1100 CE. An equinox calendar petroglyph at the site 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.

Donations are due 10 days after reservation request or by 5 p.m. Thursday March 17, whichever is earlier: 520-798-1201 or info@oldpueblo.org.

Flyer: 20220320(v2)LosMorteros&PictureRocksSpringEquinoxTour

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


March 20, 2022
8:00 am - 12:00 pm
Event Category:


Allen Dart


Los Morteros and Picture Rocks
Depart from NE corner of Silverbell Rd/Linda Vista Blvd. in Marana, AZ
Marana, AZ, AZ United States
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