The hunt is on.
Last week, four Arizona State Parks posters of Kartchner Caverns, Alamo Lake, Lost Dutchman, and Slide Rock were placed at various Light Rail stations from Phoenix to Tempe.
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If you find all four and submit your own digital photos of the the posters at the stations (example to the left), you'll be entered to win adult cave tour tickets to Kartchner Caverns State Park in Benson, Arizona. The "top photographer" will win a premium annual state park pass for use at all 27 state parks.