As a newbie in Garmin and google earth I was searching to create routes and way points on google earth because you can see the dunes profile very clearly.
If you dont know how to create routes like me the youtube is the best place to watch it.
These routes/way points are stored as file type "KML" and KMZ" so if you want to transfer it to Basecamp, you can't do it directly.
First you have to save as these file to "gdb"/gpx and then you can import to the basecamp.
For this you need file type converter, personally I found one on the website below and it is working perfectly.
Enjoy, create routes and always drive in un-driven areas :011: