Where novices ski, carer with line’s adapted poles (7,6)
I believe the answer is:
nursery slopes
'where novices ski' is the definition.
'carer with line's adapted poles' is the wordplay.
'carer' becomes 'nurse' (I've seen this before).
'with' is an insertion indicator.
'line's' becomes 'rys' (abbreviation for railway).
'adapted' indicates an anagram.
'poles' is an anagram of 'lopes'.
'rys' inserted within 'lopes' is 'ryslopes'.
'nurse'+'ryslopes'='NURSERY SLOPES'
(Other definitions for nursery slopes that I've seen before include "Where novices learn winter sport" , "Areas for skiing beginners" , "Area for beginners when skiing" , "Place for ski beginners" , "Where learners ski" .)