<div dir="ltr">I totally agree with you, no reason to map its former use. (Just as for railways, that is why I gave it as an example to your question). As you can see here [1], part of that history is mapped. I now realize I should map a few more cranes. The Dutch Wikipedia page [2] mentions its former use. The OSM object [3] links to that page.<div><br></div><div>regards</div><div><br></div><div>m.</div><div><div><br></div><div>[1] <a href="http://gk.historic.place/historische_objekte/l/en/index.html?zoom=16&lat=51.08998&lon=4.38432&select=w373513923&pid=HaHbHcSaHe">http://gk.historic.place/historische_objekte/l/en/index.html?zoom=16&lat=51.08998&lon=4.38432&select=w373513923&pid=HaHbHcSaHe</a></div><div>[2] <a href="https://nl.wikipedia.org/wiki/De_Schorre">https://nl.wikipedia.org/wiki/De_Schorre</a></div><div>[3] <a href="https://www.openstreetmap.org/way/879950048#map=15/51.0898/4.3890">https://www.openstreetmap.org/way/879950048#map=15/51.0898/4.3890</a></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jan 6, 2021 at 7:51 AM Stefan Tauner <<a href="mailto:stefan.tauner@gmx.at">stefan.tauner@gmx.at</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Wed, 6 Jan 2021 07:27:12 +0100<br>
Marc Gemis <<a href="mailto:marc.gemis@gmail.com" target="_blank">marc.gemis@gmail.com</a>> wrote:<br>
<br>
> On Thu, Dec 31, 2020 at 7:13 PM Stefan Tauner <<a href="mailto:stefan.tauner@gmx.at" target="_blank">stefan.tauner@gmx.at</a>> wrote:<br>
> <br>
> ><br>
> > However, I am not convinced that a completely razed railway has to be<br>
> > tagged as such. Why would that be the case? If things are removed from<br>
> > the world we delete them as well usually. Are there other man-made<br>
> > features with long-lasting effects that get demolished (without<br>
> > replacement)? (How) Do they get mapped? I have no example but I would<br>
> > presume such things exist (that are not historic) like industrial<br>
> > plants, mines etc. It might be more advantageous to improve tags that<br>
> > describe the remaining effects than mapping non-existent things.<br>
> ><br>
> > <br>
> This park<br>
> <a href="https://www.openstreetmap.org/search?query=de%20schorre#map=15/51.0877/4.3916" rel="noreferrer" target="_blank">https://www.openstreetmap.org/search?query=de%20schorre#map=15/51.0877/4.3916</a><br>
> is an abandoned quarry. AFAIK, there are no tags referring to its previous<br>
> life as a quarry for clay.<br>
> On this Mapillary photo<br>
> <a href="https://www.mapillary.com/app/?lat=51.0911145&lng=4.385478299972223&z=17&focus=photo&menu=false&pKey=VTDOc6u8vKWb7y5QohG6oA" rel="noreferrer" target="_blank">https://www.mapillary.com/app/?lat=51.0911145&lng=4.385478299972223&z=17&focus=photo&menu=false&pKey=VTDOc6u8vKWb7y5QohG6oA</a>,<br>
> you can see the impact on the terrain.<br>
<br>
If it would be significant enough then it should be tagged with<br>
something historic=*. But if it isn't then we should not. OSM is not an<br>
interactive history book about human impact on the world. Adding a<br>
description and mentioning the past history of the clay pits might<br>
be an alternative here but in general I personally strongly prefer<br>
linking (and improving) respective external sources such as Wikipedia<br>
articles in such cases.<br>
<br>
-- <br>
Kind regards/Mit freundlichen Grüßen, Stefan Tauner<br>
<br>
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</blockquote></div>