ok, so had enough practice with Blender to attempt this one, a litte Aussie nugget that sadly passed away, have been around this on my bike (when the cops are not around of course. Its simple enough to be my first scratch track from DEM.
View attachment 960829
there is one inthe wild, but, it looks like its RTB or BTB generated and the terrain is quite off (as is the want of google based terrrain) and elevations are not great.
the actual track has a nice sweep up and down, great on a bike
View attachment 960830
I thought Id try fix up the built one, but, rather than lookup the maker, and try reverse engineer, I think better to go outright new for this. good learning experience probably to get me ready to tackle the Nasho.
(no idea who author is, but the original one I could find is
here )