And get bearings on the mountains (5)
I believe the answer is:
andes
'the mountains' is the definition.
(I've seen this in another clue)
'and get bearings' is the wordplay.
'get bearings' becomes 'es' (I can't explain this - if you can you should believe this answer much more).
'and'+'es'='ANDES'
'on' is the link.
Can you help me to learn more?
(Other definitions for andes that I've seen before include "A geographical feature" , "Danes seen in mountains" , "Great S American mountains" , "Mountains of 6 dn" , "South American mountain system" .)