[Tagging] Active volcanoes

[Mateusz Konieczny]

Jan 24, 2020, 15:34 by kevin.b.kenny at gmail.com:

> On Fri, Jan 24, 2020 at 8:40 AM Christoph Hormann <osm at imagico.de> wrote:
>
>> Reason for the lack of verifiability is that what an active volcano is
>> in almost all uses of this term does not depend on the current state of
>> the volcano but on its history - most commonly during the holocene (10k
>> years) or during historic times.
>>
>
> That's often entirely verifiable by the existence of human artefacts
> damaged by a previous eruption.
>
But it is not verifiable in practice by amateur surveyors.

Similarly frequency of a road in cars/hour is not a practically verifiable quantity,
since determining it would require long-term observations 
which are not realistic for mappers to do.

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