Volcanic region around Etna hot and saline (5,6)
I believe the answer is:
saint helena
'volcanic region' is the definition.
The definition suggests a singular noun which matches the answer.
'around etna hot and saline' is the wordplay.
'around' indicates anagramming the letters.
'hot' becomes 'h' (abbreviation eg on taps).
'and' is a charade indicator (letters next to each other).
'etna'+'h'='etnah'
'etnah' after 'saline' is 'salineetnah'.
'salineetnah' is an anagram of 'SAINT HELENA'.
Can you help me to learn more?
(Other definitions for saint helena that I've seen before include "place for Emperor" , "British S. Atlantic colony" , "Where Napoleon died" , "British South Atlantic island" .)