[Uzin]

The map already exists, it is Zippzap's west_Alpen map. It contains the airfield at the position of Courchevel, just needs to move a bit to be so steep as needed..
Just compare the map mentioned with Google Earth map, and you will see it.

link :?: in the map is it flat :?:

http://www.filefront.com/17879335/alpen_west.zip
Yes, it is artifically flattened in the map, you must learn to restore the terrain.