Happen to arrive at way through mountains? (4,2,4)
I believe the answer is:
come to pass
'happen' is the definition.
(synonyms)
'arrive at way through mountains?' is the wordplay.
'arrive at' becomes 'come to' (I've seen this before).
'way through mountains?' becomes 'pass' (I've seen this before).
'cometo'+'pass'='COME TO PASS'
'to' acts as a link.
(Other definitions for come to pass that I've seen before include "reach mountain road" , "Biblically happen" , "Short military stick" , "Take place" .)