Blunder into rocky peak, provoking panic (6)
I believe the answer is:
terror
'panic' is the definition.
(synonyms)
'blunder into rocky peak' is the wordplay.
'blunder' becomes 'err' (I've seen this before).
'into' is an insertion indicator.
'rocky peak' becomes 'tor' (I've seen this before).
'err' placed inside 'tor' is 'TERROR'.
'provoking' is the link.
(Other definitions for terror that I've seen before include "Overwhelming feeling of fear" , "Ovewhelming fear" , "Out-of-control child" , "Panicky fright" , "Extreme fright or dread" .)