beyond retrieval

:  on or to the farther side :  farther

:  in addition :  besides

:  on or to the farther side of :  at a greater distance than

:  out of the reach or sphere (see ¹sphere 4b) of

:  in a degree or amount surpassing

:  something that lies on or to the farther side :  something that lies beyond (see ¹beyond 1)

:  something that lies outside the scope of ordinary experience

:  hereafter

:  an act or process of retrieving

:  possibility of being retrieved or of recovering