Terribly neat feature Sicilian site (4)
I believe the answer is:
etna
'sicilian site' is the definition.
(I've seen this in another clue)
'terribly neat feature' is the wordplay.
'neat' anagrams to 'ETNA'.
However, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for etna that I've seen before include "Neat (anag)" , "Neat class of volcano in Sicily" , "hotly-tipped runner" , "it may produce steam and ash" , "Volcano in Sicily, quite neat" .)