A state reached by wandering south from Amiens? (5)
I believe the answer is:
maine
'a state' is the definition.
(US state)
'wandering south from amiens?' is the wordplay.
'wandering' indicates an anagram.
'south' becomes 's' (abbreviation).
'from' suggests deleting specific letters.
'amiens' with 's' removed is 'amien'.
'amien' is an anagram of 'MAINE'.
'reached by' is the link.
(Other definitions for maine that I've seen before include "US state, capital Augusta (5)" , "North-east American state" , "somewhere in America" , "New England state" , "state of USA" .)