A pair of brothers up in Napa have constructed a rollercoaster in their backyard, which one person can ride at a time, styled like Disneyland's Matterhorn, complete with abominable snow monster.

https://sfist.com/2021/01/28/two-napa-brothers-build-mini-version-of-disneys-matterhorn-rollercoaster-in-their-backyard/

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