Render climbing places

[Tuplanolla]

There is a lot of climbing data on OpenStreetMap that goes to waste,
because it is not rendered by any of the popular layers.
Consider the forest near Fontainebleau,
where the biggest and most developed
outdoor climbing area in the world is hidden.
You would not find any of the climbing places just
by looking at the map as it is,
even though you can reveal them
with the following Overpass Turbo query.

[timeout : 5];
nwr({{geocodeBbox:Fontainebleau}}) -> .where;
(nwr.where[climbing];
 nwr.where[sport=climbing];
) -> .here;
(.here;
 >;
);
out;

Also, if you look at surrounding features with equal importance, such as

• a tourism=viewpoint or an amenity=shelter in Fontainebleau,
• an amenity=place_of_worship in grotte de l'Amour, or
• a barrier=stile with a barrier=gate in Monts de Faÿ,

you will see that they are rendered as expected.
It is a crying shame and quite inconsistent
that climbing places are not rendered at all.

I propose

• rendering nodes tagged with climbing=boulder
  by using a miniaturized and discolored version
  of the free climbing icon
  found in the OpenStreetMap Wiki article on climbing, and
• rendering nodes tagged with climbing=route_bottom
  by using a similarly modified version
  of the rope climbing icon, and
• adding either icon to nodes or areas tagged
  with leisure=sports_centre and sport=climbing,
  although this case is less important,
  because their outlines and labels are already rendered.

Here is a sketch of what the map would look like
before and after my proposal.