Let audit be carried out on summit (8)
I believe the answer is:
altitude
'summit' is the definition.
(thesaurus)
'let audit be carried out' is the wordplay.
'let audit' can be anagrammed to 'ALTITUDE'.
Though, I am unsure how the anagram is indicated.
'on' is the link.
Can you help me to learn more?
(Other definitions for altitude that I've seen before include "high place" , "Height (above ground)" , "Elevation above sea level" , "Angular distance above the horizon" , "Elevation above sea-level" .)