OUTDOORSBIODIVERSITY WALKS. The Southwest Center for Biological Diversity offers "biodiversity walks" at 9 a.m. every first and third Sunday of the month. Join Center staff and expert guests for a walk along Cienega Creek. Learn about the importance of riparian habitats for wildlife and water quality, and the implications of grazing management. Expect a two-mile walk lasting two to three hours. Don't forget your hat and water. Call David Hogan at 733-1391 for reservations and directions.
CITIZENS FOR SOLAR. Learn to conserve the world's natural resources at the 15th annual Tucson Solar Potluck and Exhibition from 9 a.m. to sundown Saturday, May 10, at Catalina State Park. Featured events are solar cooking, music, photovoltaic demonstrations, an electric car, and more. The potluck begins at 5 p.m. The event is free, but the park charges $4 admission. Call 292-9020 for information.
DESERT ARCHAEOLOGY TOURS. The Center for Desert Archaeology offers whole- and half-day tours of local archaeological treasures, including the following: the Romero Ruin Tour, a look at the remnants of the four great cultures that once inhabited the Catalina State Park area; the Rock Art Tour, an in-depth look offering hikers a chance to visit petroglyph sites near Tucson; and the Downtown Tucson Tour, featuring more than 30 centuries of history. Half-day tours are $40, full-day treks are $70, with group rates available for groups of three to 45 people. Wear long-sleeved clothing and a hat, and make sure you've got sturdy shoes with ankle support and good traction. Water is provided. Call 885-6283 for information.
DIG IT. Old Pueblo Archaeology Center, a nonprofit corporation, offers public archaeological field school sessions at the Sabino Canyon Ruin, home of Hohokam Indians 650 to 1,000 years ago. The field school features instruction in archaeological excavation techniques, artifact recovery and care, interpretation of ancient cultures, and archaeological ethics. Lunch is provided. Cost is $69 per eight-hour day, with reduced rates for groups and multiple-day sign-ups. Reservations are required 24 hours in advance. Archaeologist guided tours of the ruin are also available. Call 798-1201 for reservations and information.
TOHONO CHUL PARK. 7366 N. Paseo del Norte. 742-6455. Tohono Chul Park grounds are open from 7 a.m. to sunset daily. Exhibit hours are 9:30 a.m. to 5 p.m. Monday through Saturday, 11 a.m. to 5 p.m. Sunday. Admission is $2. Walk in the Park tours are offered at 9 a.m. and 1 p.m. Tuesday, Thursday and Saturday. Art in the Park tours, docent-guided looks at gallery exhibits, are at 11 a.m. Tuesday and Thursday, 2 p.m. Sunday. The park offers additional guided tours for your enjoyment. Join David Doyel, archaeologist and anthropologist, for a free lecture at 7 p.m. Thursday, May 15. Doyel will discuss the customs developed by Native groups to structure their views and cultures. Call 742-6455 for park information and daily events schedule.
NATURE CONSERVANCY. Get out of the bustle of town and take a trip to the Nature Conservancy's Patagonia-Sonoita Creek Visitor Center. There you can get back to nature and enjoy bird watching, guided tours and hikes. Regular preserve hours are 7:30 a.m. to 4 p.m. Wednesday through Sunday. Take Highway 82 to Patagonia, head west on Fourth Avenue, and south on Pennsylvania. Call 1-520-394-2400 for information.
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