There's a neat trick to create contour lines based on the GE 3D terrain using Sketch-Up. The resulting KML however is a model
I have looked at ways of importing KML layers to QGIS, like it was suggested here, yet it doesn't accept this kind of kml file.
So, is there a way to import such a thing into QGIS (or ArcMap for that matter)? and if not can such a model be split into its separate contour lines while retaining the z elevation attribute?
Here's the model itself: