Clear going back, walked across one unmade track (4,4)
I believe the answer is:
dirt road
'unmade track' is the definition.
(basic road)
'clear going back walked across one' is the wordplay.
'clear' becomes 'rid' (synonyms).
'going back' is a reversal indicator.
'walked' becomes 'trod' (treading is a kind of walking).
'across' indicates putting letters inside.
'one' becomes 'a' (a thing is one thing).
'rid' back-to-front is 'dir'.
'trod' going around 'a' is 'troad'.
'dir'+'troad'='DIRT-ROAD'
(Another definition for dirt road that I've seen is " way down under".)