Hello Skilled Persons.
I have projected a site plan onto a terrain secured through Sketchup’s Geo-location option, using the method described in Projecting image over terrain.
When I export this out of sketchup as a .kmz to view in Google Earth, and toggle terrain on in Google Earth, the site plan doesn’t rest on the terrain. It isn’t following the terrain contours.
I wouldn’t be surprised if the terrain data imported with SketchUp’s geo-location feature doesn’t match Google Earth’s terrain. They come from different sources. I don’t know of a good solution short of trial and error for what you are attempting to do.
That would not necessarily help with placing. The GE terrain data is not LIDAR data but somehow inferred from satellite images, and in my tries (OK, I live on the edge of the world) wildly inaccurate.