You can go back home with your tail between your legs. All you needed to do is remove the bar with the key attached to the end and unlock the paddle lock. Maybe a little research before your next visit, or perhaps the one after that, soooooo unfortunate that you didn't solve this field puzzle the first time. Well eventually you should be able to open it in 2 minutes or less, that's actually all it takes. If you are clever enough to get it open, but struggle to set things back as you found them, send me an email and let me know about your unfortunate abilities so I can correct the situation. This will be unfortunate for me, but I'm sure I will still get to giggleover your misfortune.
Well this is where I wish you all the best and start laughing loudly!
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For more on geocaching in Iowa, visit theIowa Geocachers Organization home page