Season of Tradition, a series of events featuring crafts and presentations by members of the Tohono O'odham Nation, take place from 10 a.m. to 4 p.m., on the following days: Saturday, March 20: Archaeology. Sunday, March 21: Archaeology and native plant use. Saturday, March 27: Horsehair baskets, traditional baskets and painting. Sunday, March 28: Native plant use, traditional baskets and pottery. All events take place in the Kris Eggle Visitor Center. Call for more information.