sent from a phone

> On 15. Aug 2020, at 01:21, Arne Johannessen <a...@thaw.de> wrote:
> 
> That's precisely why man_made=tunnel is so rare.



IMHO a tunnel is more than the way through it, the ventilation shafts, escape 
ways, also arguably all the tubes, could be considered „the tunnel“. The reason 
it is not done typically is that these features aren’t very visible (mostly 
underground) and hard to survey (you may not legally enter the escape ways 
usually, may not enter by bike or on foot). 
For all of our common usecases, mapping the way through the tunnel and 
indicating it is inside a tunnel is sufficient, that’s why we do not map them 
in greater detail so far). An implicit tunnel is considered sufficient.


Cheers Martin 
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