A natural=volcano is suppose to be a volcanic vent, usually found at the center of a crater.
While it’s common to misuse this tag to mark the highest peak of a mountain of volcanic origin, it would be best to use it for the actual center of the volcanic vent, and use natural=peak for the high point. Some recently extinct volcanoes might have a visible crater wall or an open vent, is they are low elevation or latitude in areas without glaciers or heavy rainfall (extinct craters usually erode quickly). But it would be most verifiable if only volcanic vents with clear signs of recent activity are tagged. An eroded remnant of a volcano in Germany which hardly looks like a crater should not be tagged natural=volcano, since the classification as a volcano is based on fieldwork by professional geologists and can’t be confirmed by regular mappers. Extinct volcanoes might get a tag that could be attached to a natural=peak node; e.g.natural=peak + volcano:status=extinct Joseph On Tue, Jul 23, 2019 at 11:19 PM Mateusz Konieczny <matkoni...@tutanota.com> wrote: > Is it OK to use natural=volcano for remains of volcanoes? > > There is volcano:status=extinct but I feel that tagging > volcano-related rocks as volcanoes is a poor idea. > > See > > https://www.steinmann.uni-bonn.de/institut/bereiche/endogene-prozesse/arbeitsgruppen/strukturgeologie/lehre/aufschluesse-im-rheinland/dachsbusch > for a real example (text in German, but images should be clear). > > Triggered by > https://www.openstreetmap.org/note/1792260#map=18/50.42869/7.23260 > > Similar examples include > Góra Swiętej Anny / Annaberg > https://pl.wikipedia.org/wiki/G%C3%B3ra_%C5%9Awi%C4%99tej_Anny - > https://www.openstreetmap.org/node/2241712057/history > volcano existed here 27 millions years ago, volcanic cone is fully eroded > and > the current hill is made of stones formed in the caldera of the volcano. > > > Wdżar > https://pl.wikipedia.org/wiki/Wd%C5%BCar > https://www.openstreetmap.org/node/726504503/history > There are volcanic rocks here, mountains looks like a volcanonic cone, > called > volcano by some for marketing purposes but there is no reason whatsoever to > describe it as volcano. > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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