Emblem to carry over top of mountain (5)
I believe the answer is:
totem
'emblem' is the definition.
(I know that totem is a type of emblem)
'carry over top of mountain' is the wordplay.
'carry' becomes 'tote' (toting is a kind of carrying).
'over' means one lot of letters go next to another.
'top of' suggests taking the first letters.
The initial letter of 'mountain' is 'm'.
'tote'+'m'='TOTEM'
'to' is the link.
(Other definitions for totem that I've seen before include "Natural item of spiritual significance" , "Thing of veneration (on a pole?)" , "Revered symbol" , "Symbolic pole" , "token" .)