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I am compiling a map of every U. S. county I have ever been. The darker the color, the more intensive the use. For example, the reds and browns are multiple days camping, canoeing, biking or a large number of day trips. Orange represents just one or two day trips or hotel stay. Yellow is drive through only, while blue is expressway driving or night driving where you can't see anything worthwhile.
This comes from researching old routes of vacations I've taken over the past 35 years. It's dynamic so I'm sure that I'll be adding more soon.
Just thought I'd share with you my latest waste-of-time-project.