This is an arduino gadget cache located on the fringe of Naranja Town Park, in Oro Valley. It's a short trail walk from parking to the cache area. On the way there, practice humming, whistling, singing, clapping or stomping the song we all know so well. It will help you when you get to the cache, and it will make the walk that much more enjoyable. Who knows, you might even bust out a rendition of "Climb Every Mountain" or "Sixteen, Going on Seventeen" on the the way there!
I raised the difficulty level after testing this on my wife, Pooh-Pooh. She got it open, but only after a lot of fumbling with the keys. She said "I think I failed the audition!" The main thing is, she didn't give up, so you shouldn't either. Please bring water with you, wear sun screen, and watch out for flying arrows, the Germans, and other Wild Things.