World-famous rock group from the South West? (10)
I believe the answer is:
stonehenge
This could be a double definition.
'world-famous rock group' is the first definition.
(set of ancient stone monuments)
'the south west?' is the second definition.
The definition suggests a singular noun which matches the answer.
'from' acts as a link.
(Other definitions for stonehenge that I've seen before include "Salisbury Plain circle" , "heritage site" , "Druid comes here" , "Wiltshire landmark" , "Prehistoric ruin, Salisbury Plain" .)