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> Il giorno 04 set 2016, alle ore 11:40, Richard <ricoz....@gmail.com> ha > scritto: > > Also, I would > argue that "natural" implies natural ok, agreed > and there have been enough informal > proposals for man_made=shaft and similar. I think a shaft is pretty different from those grottoes I mentioned, in being a vertical, regular structure and normally longer, while the artificial, decorative/recreational grottoes are not very deep. Also the former is usually of technical character, while the latter is decorative. maybe man_made=grotto for these cases? cheers, Martin _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
