CANCELLED Archaeologist Allen Dart leads a weekend workshop including lectures, artifact displays and walking tours from 1 p.m., Saturday, April 14, to 2 p.m., Sunday, April 15; $105, $95 Friends of the Buenos Aires National Wildlife Refuge, includes overnight accommodations and meals. Session topics include "Arts and Culture of Ancient Southern Arizona Hohokam Indians" and "Altar Valley Archaeological Surveys: Sierrita and Coyote Mountains and the Brown Canyon Area of the Baboquivaris." Advance registration is required. Call 405-5665, or visit friendsofbanwr.intuitwebsites.com
to register or for more information.