Crystal Mountain's Cardboard Classic | Adventures in Northern Michigan I get a text while they are out letting me know they were doing the Cardboard Classic the next morning, just in case I wanted to go.

Couple of years ago, kid participated in Crystal Mountain's Cardboard Classic. My kids grew up with a Dad who believed duct tape was the answer. It is true duct tape and cardboard - indestructible. #cardboardclassic #ducttape #crystalmountain
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