Where are these features located? I haven't seen anything called a "promontory" in the western USA: we would call these features ridges or cliffs if they are hills or mountains above lower land, or if they are surrounded by water they would be a headland, peninsula, cape, or "point".
In OSM, there is already a tag for natural=cape, and the wiki page suggests it can be used for all water promontories: "Cape <http://en.wikipedia.org/wiki/en:Cape_(geography)> - a prominent, elevated piece of land sticking out into the sea or large lake. Includes capes, heads, headlands, peninsulas and (water) promontories." https://wiki.openstreetmap.org/wiki/Tag:natural%3Dcape - used 11,000 times. "Natural=*" is perfect in this case, because headlands/capes are natural features formed by geological processes and natural erosion. So if you are tagging "promontories" that project into a lake or sea, then use natural=cape on a point. If you are tagging hills or mountains on land, use natural=ridge as a way along the center of the ridge in most cases. You can also add natural=peak to a node, if there is a local high point that is named. "Natural=*" is also totally appropriate in this case; ridges and peaks are also formed by natural geological and meteorological processes, no? I've been meaning to ask the folks at OpenStreetMap Carto to start rendering the names of ridges as a name label, so that mappers will not be tempted to add place=locality or natural=peak when the named feature is really a ridge. Thanks! Joseph On Thu, Oct 4, 2018 at 8:20 AM Warin <61sundow...@gmail.com> wrote: > Hi, > > There is not a tag for the land form 'promontory' meaning a raised mass > of land projecting into a low land or water body. > > See https://en.wikipedia.org/wiki/Promontory > > I have come across them as named 'points' and have been tagging a few of > them as place=locality for lack of something better. > > > The nearest thing is natural=cape, but that only applies to sea > retaliated things and I don't like the key 'natural' as it applies to > both 'natural' and 'unnatural' thing making a nonsense of the word. > > > So I think the best tag would be landform=promontory. > > > Other ideas? > > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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