[Tagging] [OSM-talk-be] how to map a fr:talus?

Yves yvecai at gmail.com
Thu Nov 23 21:05:37 UTC 2017

Hmm, as a French, I surely know what a talus is. 
However, I don't think the man_made key would fit all of them. While surveying, are to say if they are natural or man made. 
To my knowledge, a 'talus' can also have 2 sides, like a small but elongated hill. 

Le 23 novembre 2017 20:30:46 GMT+01:00, "André Pirard" <A.Pirard.Papou at gmail.com> a écrit :
>On 2017-11-23 17:26, joost schouppe wrote:
>> 2017-11-23 16:48 GMT+01:00 André Pirard <A.Pirard.Papou at gmail.com
>> <mailto:A.Pirard.Papou at gmail.com>>:
>>     Hi,
>>     I'm looking for how to map what is called in French a talus
>>     <http://www.cnrtl.fr/definition/talus> (Google's translation).
>>     I would call this a 1.8m simple step running for some reason for
>>     several 100s meters across meadows.
>>     Steep slope. There are "top of slope" and "bottom of slope"
>>     Rest is perfectly flat either side.
>>     It might be the remnants of a old canal's bank whose other side
>>     would have been eroded by the often overflowing nearby river.
>>     A "talus" made of plain ground is often frequent at one side of a
>>     path or track.
>>     According to the wiki, it's not a "scree" nor a "shingle". It's
>>     much less matter specific.
>>     So what?
>>     I'll use "scree" unless/until I hear of better for a French
>>     Cheers
>>     André.
>> I'm not entirely sure this is what you have in mind, but in the cases
>> where it is associated with roads, I've seen historic=hollow_way
>> the slope is caused by the fact that there's an old road), and
>> "embankment" or "cutting" when the slope is deliberatly constructed.
>> In other cases, I've seen what I think you describe mapped as
>> natural=cliff, which is obviously wrong, but does get the message
>> accross. For example where sand or rock was quarried this is common
>> see on the map. I'm hoping someone has seen better ideas.
>Thanks for all your fast answers from which I had to choose the first
>one to reply to.
>A photo was asked. I might go back there to make one, but you wouldn't
>see more that the surface of a meadow looking like this on a long
>distance, at varying steepness and width.
>               _________
>          /
>         /
>It can be seen on this map share
>pan it to the left and right.
>The two striped, faint lines are the upper and lower edges (rims,
>levels) from the BE SPW(allonie) PICC numerical imagery
>(JOSM) overlay allowing me to map it. As you zoom out, you will see
>the aerial photo is darker along that line.
>The Cartoweb background (Fond de Plan) draws it as the typical "behind
>which to hide" line of old military maps.
>Well, in OSM parlance, it's not a cree because there is no cliff (1),
>not a shingle because there is no sea and not an embankment because
>there is no road to be an attribute of.
>Well, as I said it, what I'm facing seems to be, as I found more
>specifically, the remnants of this old canal @ N°12
>The river often overflows as high as above the road. When the water
>back, it washes the left bank of the canal towards the river but the
>right bank is mostly just overflown.
>So, there's nothing in OSM for that precisely.
>Would man_made=dyke be the most resembling and acceptable with an
>explanation note?
>Thanks and TIA,
>(1) there's a very beautiful one, but at the other side of the river,
>called "La Roche aux Faucons" (Falcons' Cliff).
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