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Jack Kerouac spent a summer as a fire lookout on Desolation Peak in the North Cascades of Washington state. I think I have a picture of the peak at a distance from a trip there in 2015.

I know that, he mentioned it in on of his less known books: https://en.wikipedia.org/wiki/Desolation_Angels_(novel)

I don't think I knew it until I read the info board at the roadside pullover.