Sundial fixed in two areas in Spanish region (9)
I believe the answer is:
andalusia
'spanish region' is the definition.
(I've seen this before)
'sundial fixed in two areas' is the wordplay.
'two areas' means two replacements for 'area'.
'fixed' is an anagram indicator.
'in' means one lot of letters goes inside another.
'area' becomes 'a' (maths abbreviation).
'area' becomes 'a' (maths abbreviation).
'sundial' with letters rearranged gives 'ndalusi'.
'a'+'a'='aa'
'ndalusi' placed inside 'aa' is 'ANDALUSIA'.
'in' is the link.
(Other definitions for andalusia that I've seen before include "Laud Asian found in southern part of Spain" , "southern Spanish region" , "Spain's southernmost region" , "Region of southern Spain" , "Costa del Sol region" .)