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<div>I live in Kraków, city first mentioned in year 965 (and it was back then already a<br></div><div dir="auto">locally important and wealthy settlement).<br></div><div dir="auto"><br></div><div dir="auto">It was rebuild multiple times, plenty of traces/reconstructions/guesses were made<br></div><div dir="auto">and historians put a lot of effort into research where various buildings used to be.<br></div><div dir="auto"><br></div><div dir="auto">Some of them are quite certain.<br></div><div dir="auto"><br></div><div dir="auto">But it is not mappable as destroyed:building=* in OSM.<br></div><div dir="auto"><br></div><div dir="auto">Fortunately it is not verifiable (different historians have differing reconstructions),<br></div><div dir="auto">and not mappable in OSM.<br></div><div dir="auto"><br></div><div dir="auto">Otherwise it would be ridiculously overwhelming and would block any editing by<br></div><div dir="auto">beginners (3D mapping is already causing major issues).<br></div><div dir="auto"><br></div><div dir="auto">I am highly dubious about mapping even ones where clearly preserved underground <br></div><div>remains are present at known locations.<br></div><div dir="auto"><br></div><div dir="auto">Entrances of old churches are located below street level - not above it. Partially<br></div><div dir="auto">because buildings and roads were reconstructed multiple times and remains of them<br></div><div dir="auto">caused ground level to increase (part of that was layers of old rubbish).<br></div><div dir="auto"><br></div><div dir="auto">Either way this old layers are not mappable.<br></div><div dir="auto"><br></div><div dir="auto">For extreme case see <a href="https://en.wikipedia.org/wiki/Tell_(archaeology)" rel="noopener noreferrer" target="_blank">https://en.wikipedia.org/wiki/Tell_(archaeology)</a><br></div><div dir="auto">"mound consisting of the accumulated and stratified debris of a succession of<br></div><div dir="auto">consecutive settlements at the same site, the refuse of generations of
people<br></div><div dir="auto">who built and inhabited them, and of natural sediment"<br></div><div dir="auto"><br></div><div dir="auto">And yes, archeological excavations can recover and document this layers.<br></div><div dir="auto">Still, it is not mappable in OSM and should be deleted if mapped - like<br></div><div dir="auto">railways that disappeared without identifiable trace.<br></div><div dir="auto">(for example if "Railway Street" is sole remaining trace, then railway=abandoned <br></div><div dir="auto">should be and will be removed)<br></div><div dir="auto"><br></div><div>Apr 26, 2022, 11:30 by dieterdreist@gmail.com:<br></div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div><br></div><div><br></div><div>sent from a phone<br></div><blockquote><div>On 25 Apr 2022, at 15:55, Dave F via Tagging <tagging@openstreetmap.org> wrote:<br></div><div><br></div><div>How far back should we go? i live in a Roman city. That's a /lot/ of removed data.<br></div></blockquote><div><br></div><div><br></div><div>seems like a red herring to me, or do you have knowledge about all this data back until ancient roman times?<br></div><div><br></div><div>Generally I agree, keeping stuff that is completely gone with lifecycle prefixes is something that exceptionally can make sense, but is normally not desirable.<br></div><div><br></div><div>On the other hand, we shouldn’t require that things are obvious to everybody, or that they are visible in all cases. For example if during construction work an ancient arterial road is “found” (or maybe better, is temporarily brought to light), and after some documentation is later recovered with earth, it should still be possible to keep the feature, even if is currently not visible on the surface (but could be checked on/in the ground by digging). Similar situations occur frequently because remnants are often recovered to protect them.<br></div><div><br></div></blockquote><div dir="auto"><br></div> </body>
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