Some families stuck at home during COVID play games or do arts and crafts but one went WAY bigger. Stuck at home during the shut down, a Napa Valley family with some AEC experience built a roller coaster in their backyard. It's a pretty impressive feat of architecture and engineering craftmanship. They even have a chain driven lift hill. I'm not sure what it is but they should win it. Not too bad and really impressive for a family created backyard ride.
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