In Africa, could it be a slog to get there? (5)
I believe the answer is:
lagos
'in africa' is the definition.
('Lagos' is part of 'africa')
'could it be a slog to get there?' is the wordplay.
'could it be' is an anagram indicator.
'to get' is an insertion indicator.
'there?' becomes 'a' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'slog' is an anagram of 'lgos'.
'lgos' enclosing 'a' is 'LAGOS'.
Can you help me to learn more?
(Other definitions for lagos that I've seen before include "Formerly capital of Nigeria" , "Largest city and once capital of Nigeria" , "city in Africa" , "Former Nigerian capital" , "Strange goals of the Nigerian port" .)