When I originally read the question I assumed it was asking for this sort
of anomaly. How'd you find this one? Maybe you could find a context-legal
one by the same method.
> 426,480:1 - and it includes a ferry! (Dunno where.)
Easily found by searching for text in the route map. It's at the
El Beid or Ebeji River, forming the Nigeria-Cameroon border.
> If you drag either of the markers slightly closer to each other the
> recommended route becomes a bit more sensible.
There's a similar anomaly in the area of that ferry -- an obvious
shorter route crossing the river by bridge at Gambaru. You can
see by experiment that Google Maps knows the bridge route is there
but, again, tries not to send you that way unless you put the start
and end points close enough together (within about 10 miles).
Mark Brader | "...people continue to wish that C were something it is not,
Toronto | not realizing that if C were what they thought they wanted
| it to be, it would never have succeeded and they wouldn't
| be using it in the first place." -- Steve Summit