Ramble in the mountains? (5)
I believe the answer is:
range
This clue is a double definition.
'ramble' is the first definition.
(I know that ramble can be written as range)
'the mountains?' is the second definition.
(range of mountains)
'in' acts as a link.
(Other definitions for range that I've seen before include "Scope; chain" , "Compass, extent" , "Series of connected mountains" , "Old song: ''Home on the . . . . .''" , "1 across [CLASSIFY]" .)