Route Greek cartographer crosses on way north (5)
I believe the answer is:
track
'route' is the definition.
(I know that route can be written as track)
'greek cartographer crosses on way north' is the wordplay.
'TRACK' is hidden back-to-front within the letters.
But, I'm unsure how this is indicated.
Can you help me to learn more?
(Other definitions for track that I've seen before include "Extract from record" , "Rough path or road" , "Way" , "recording" , "Course over which races are run" .)