Organised excursion led to ancient city (9,4)
I believe the answer is:
conducted tour
'organised excursion' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'led to ancient city' is the wordplay.
I cannot really understand how this works, but
'led' could be 'conducted' (similar in meaning) and 'conducted' is found in the answer.
'to' is within the answer.
'city' could be 'ur' (ancient Sumerian city state) and 'ur' is present in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for conducted tour that I've seen before include "Guided look-round" , "Trip led by a guide" .)