Hi Ludovico

I've made some changes of your 'named' natural areas to boundary since they were overlapping/crossing previously mapped areas in detail (can't do that). Also your 'named' areas have overlaps and gaps themselves,  I've resolved the overlaps by best guess. The task is up to you to fill in the natural areas exact and detailed following the previously mapped zones. I've added a few rock, scree, wood zones and a nameless stream of which the details you can find in this change set https://www.openstreetmap.org/changeset/159158982

Question: What are the sources for these 'named' zones, found 9, some of them flagged because of the mentioned overlaps with previously mapped landcover details.

If you have questions, let me know

happy mapping.

SekeRob