[Tagging] What about a disused quarry and historic surface mining?

[Tom Pfeifer]

On 09.01.2017 13:15, ael wrote:
> This thread has reminded me that I have encountered problems with
> mapping disused quarries and surface mining.
>
> The quarries that I have in mind are major geographical features - they
> have not been filled in. I tried tagging them as landuse=quarry and
> disused=yes. If landuse really does mean current use of an area, that
> looks contradictory. Often such old quarries are now in use for

We have lifecycle tagging for this purpose. Your former quarry is
disused:landuse=quarry

Please do not use "disused=yes" as it is considered troll-tagging, first 
saying it is simething, and in the next line negating it.

> Often such old quarries are now in use for recreation, often the water filled part for watersports. So perhaps that
> is "land"use=recreation or landuse=quarry;recreation? It seem clear that
> there is a problem here. A (large) quarry is perhaps geographical rather
> than landuse?

The landuse tag should describe the current use, not the former. Thus it is
landuse=recreation_ground or
natural=water (as it has been re-naturated into a lake)

In the end is is just mankind changing landscape, as other geological 
processes do; such as the glacier in the ice age carved out a valley.

> I have the same problem with historic surface mining areas: these are
> major features on the landscape, often with very large excavations, and need
> recording/rendering, yet now are "just" moorland or  have other uses.

Rendering depends on your interest. You can render a map with disused 
features. You can convince the carto team to do so on the major map if 
you prove sufficient general interest.

> Again, I didn't think landuse=surface_mining + historic + disused worked
> and certainly didn't render.
>
> I am tempted to bring up the case of major bridges which are parts of
> abandoned railways not being rendered. While that really is a bug in the

man_made=bridge is rendered on the main carto map. If the bridge outline 
of a major bridge is not in the database, it's the mappers' fault, not 
the renderers'.

> renderers, if we had some tag for major physical features that would
> be rendered regardless of any historic or disused tags. it would solve
> many such problems.
>
> Any suggestions: do we need new tags?

No.
https://wiki.openstreetmap.org/wiki/Key:disused:
Usage:
disused:landuse=*  616 of which quarry are the most frequent with 227, 
followed by 101 military.
https://taginfo.openstreetmap.org/keys/?key=disused%3Alanduse