Cardboard Boat Race, Golden, Colorado

What do geeks at Colorado School of Mines do for fun on an April weekend? Build boats out of cardboard and duct tape. 

Will they float? Will they capsize at the first rapid? Many do.

But some boats and teams do make it to the finish line without swamping, having their boats disintegrate or getting grounded and disqualified. 

The water level in Clear Creek is very low, so grounding was common. 

Great fun.