This is an old proposal, that have been discussed before. It lead to a rewriting and instead of natural=rock it is proposed natural=bare_rock.
http://wiki.openstreetmap.org/wiki/Proposed_features/bare_rock It is supposed to be a tag for land cover. /Johan Jönsson ----------------------------------------------- Visa var du kommer ifrån! Skaffa en gratis e-postadress på www.goteborg.cc _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging