Seldom seen in disaster areas (4)
I believe the answer is:
rare
'seldom seen' is the definition.
(I've seen this in another clue)
'in disaster areas' is the wordplay.
'in' indicates the answer is hidden within the clue.
'RARE' is hidden in the letters of 'disaster areas'.
(Other definitions for rare that I've seen before include "Scarce or uncommon" , "like Ben Jonson, Jack Young thought" , "Scarce as hen's teeth!" , "Singular, infrequent" , "Infrequent; remarkable" .)