[Tagging] Feature Proposal - RFC - Survey Markers

[Michael Patrick]

> > survey_point:condition=destroyed is not proposed. If the survey marker
no longer exists, it should be deleted from OSM.

The survey point and observable evidence still exist, even though the
monument may no longer be present. Monuments are 'lost' and 'recovered' all
the time because of all sorts of events - vandalism, crime, natural
disasters, land slips, forestry activity, etc.
There is a whole domain of archeological survey forensics, with techniques
such as discontinuities in soil, presence of rust particles, dissecting
trees to find blazes, and even collecting oral histories.
If you remove the point because it is no longer easily visible, then you
are also obligated to remove many of the intermediary points that define
the polylines of a lot of admin and park boundaries - those once had
markers also ( especially near rivers ) and are now missing.

Michael Patrick


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