To celebrate the autumnal equinox,archaeologist Allen Dart leads a tour of Los Morteros, an ancient village with a Hohokam ball court, and other sites, from 8 a.m. to noon, Friday, Sept. 23. The tour departs from the corner of Silverbell Road and Linda Vista Boulevard. $15 general; $12 for Old Pueblo Archaeology Center and Pueblo Grande Museum Auxiliary members. Reservations are required. Call 798-1201, or email firstname.lastname@example.org for more information.