This is a past event.

Presentations at Saguaro National Park East

Find out what changing climate means for the national parks and what a warmer, drier future could mean for the saguaro cactus at "Yesterday, Today ... and Saguaro" at 3 p.m., Saturday, Sept. 11. "People and Places of Saguaro's Past," photo tour of the park's historic structures, takes place at 11 a.m., Sunday, Sept. 12. Free with park-use fee of $10 per vehicle; or $5 for pedestrians or bicyclists. Call for more information.