[Tagging] haha barriers

[Raphael]

Hi together

On Wed, 29 Dec 2021 at 17:48, <osm.tagging at thorsten.engler.id.au> wrote:

> I would have just mapped these as a 2 parallel ways with barrier=retaining_wall and man_made=embankment (such that the “downward” side of each is pointing towards each other).
>
> This allows the exact mapping of not just the position of the wall, but also the top of the slope towards the wall.

I would also map it that way.

Analogously, in the case of a double ha-ha, i would map it as a
man_made=embankment, a barrier=wall and another man_made=embankment.
(Or as two barrier=retaining_wall in the case of a wide trench
consisting of two retainging walls [^1], which according to Wikipedia
is also a ha-ha.)

[^1]: https://commons.wikimedia.org/wiki/File:Petit_Trianon_Haha.JPG

Regards
Raphael