On journey, endures uncovered berth in Asian region (4,6)
I believe the answer is:
gobi desert
'asian region' is the definition.
(the Gobi desert is in Asia)
'on journey endures uncovered berth' is the wordplay.
'on journey' becomes 'go' (I've seen this in other clues).
'endures' becomes 'bides' (I've seen this in another clue).
'uncovered' indicates the central letters.
The centre of 'berth' is 'ert'.
'go'+'bides'+'ert'='GOBI DESERT'
'in' acts as a link.
(Other definitions for gobi desert that I've seen before include "dry expanse" , "Region of Central Asia" , "Asian wilderness" , "Mongolian wasteland" , "Be intelligible" .)