The Matterhorn's range (4)
I believe the answer is:
alps
'the matterhorn's range' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for alps that I've seen before include "Laps around mountains" , "European mountains" , "European mountain chain" , "Pals put on the mountains" , "Eur. mountain range" .)