Methinks you need an esubmarine!Speaking of which, I'm kind of a completionist so I keep a heat map of my rides in order to slowly make sure to ride every street & trail in my neighborhood.
i'll have trouble completing my hometown after the last OSM map update. Someone added the ~2.5 miles of trails in the Edmonds Underwater Park to OSM.
The red(red=unridden by me) lines are the underwater trails used by divers to navigate the park. Can't even use a pedal boat to complete them as no boats are allowed.
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