Aware of rocky peak first in the city (7)
I believe the answer is:
toronto
'city' is the definition.
(Toronto is an example)
'aware of rocky peak first' is the wordplay.
'aware of' becomes 'onto' (I've seen this before).
'rocky peak' becomes 'tor' (I've seen this before).
'first' is a charade indicator (letters next to each other).
'onto' after 'tor' is 'TORONTO'.
'in the' acts as a link.
(Other definitions for toronto that I've seen before include "Ontario's capital" , "Transatlantic city" , "Canada's largest city" , "Ontarian capital" , "Canadian city" .)