View from pass crossing westmost part of Tyrol (5)
I believe the answer is:
vista
'view' is the definition.
(I know that view can be written as vista)
'pass crossing westmost part of tyrol' is the wordplay.
'pass' becomes 'visa' (pass allowing international travel).
'crossing' is an insertion indicator (to cross can mean to go over or around).
'westmost part of' suggests taking the first letters (letter on the left or western end of the word).
The initial letter of 'tyrol' is 't'.
'visa' placed around 't' is 'VISTA'.
'from' is the link.
(Other definitions for vista that I've seen before include "A view as seen through a long narrow opening" , "Panoramic view" , "Broad prospect" , "Pleasing view" , "Panoramic scene" .)