Nowhere to be found (4)
(Other definitions for awol that I've seen before include "On the lam" , "Army offence of being missing from duty, briefly" , "Absent without permission, in short" , "Truant (or just missing)" , "Missing without permission" .)
'nowhere to be found' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for gone that I've seen before include "Away, departed" , "Moved - died" , "Departed or no longer available" , "No longer present" , "Departed, left" .)