Stumble on crude oil in North Africa (7)
I believe the answer is:
tripoli
'north africa' is the definition.
The answer and definition can be both locations as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'stumble on crude oil' is the wordplay.
'stumble' becomes 'trip' (synonyms).
'on' is an insertion indicator.
'crude' indicates an anagram.
'oil' is an anagram of 'oli'.
'trip' put inside 'oli' is 'TRIPOLI'.
'in' is the link.
Can you help me to learn more?
(Other definitions for tripoli that I've seen before include "Middle East port" , "Libyan capital" , "city on the Mediterranean" , "powdery deposit" , "Port city of Lebanon" .)