Fire watched over in the range (8)
I believe the answer is:
pyrenees
'the range' is the definition.
(mountain range)
'fire watched over' is the wordplay.
'fire' becomes 'pyre' (as in a funeral pyre).
'watched' becomes 'seen' (I've seen this before).
'over' is a reversal indicator.
'seen' back-to-front is 'nees'.
'pyre'+'nees'='PYRENEES'
'in' is the link.
(Other definitions for pyrenees that I've seen before include "Mountain range on the French/Spanish border" , "Mountain range between France and Spain" , "European mountains" , "Mountain chain between France and Spain" , "Mountains between France and Spain" .)