[Tagging] Mapping a region/landscape

[Tobias]

I would like to map some areas like Wiehengebirge and Teutoburgerwald.

At the moment the Tagging is attached on areas which represent forest.

http://nominatim.openstreetmap.org/search?polygon=1&q=Wiehengebirge

Can somebody help me to find the right tags? There was some weeks ago a
discussion about mapping areas in the alps. I do not have the mails
anymore - was there a conclusion?

Regards, cracklinrain