I have got a result. This mesh would make a good 3D print one could then attempt to paste a Google map onto the surface. This shows Loch Linnhe with the start of the Great Glen branching off to the right, it eventually arrives at Inverness. I wasn’t thinking straight as I missed Ben Nevis, it’s off to the right about where those grey bits are. I’ll do Ben Nevis and fly a camera about it, not two close as Google imagery is not very high resolution. Got there in the end, GIS does work.I’ll pop a video together but first I have to go out horseing before the rain arrives.