Maltreatment involving one doctor on large historic site (3,6)
I believe the answer is:
abu simbel
'historic site' is the definition.
The definition suggests a singular noun which matches the answer.
'maltreatment involving one doctor on large' is the wordplay.
'maltreatment' becomes 'abuse' (synonyms).
'involving' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'doctor on' becomes 'mb' (Bachelor of Medicine, Medicinae Baccalaureus. I am not sure about the 'on' bit.).
'large' becomes 'L' (eg in clothes sizes).
'i'+'mb'='imb'
'abuse' placed around 'imb' is 'abusimbe'.
'abusimbe'+'l'='ABU SIMBEL'
Can you help me to learn more?
(Other definitions for abu simbel that I've seen before include "temple site" , "Site of two rock temples in southern Egypt" , "Egyptian temple complex moved when Aswan dam was created" .)