Painting of them Urals (5)
I believe the answer is:
mural
'painting' is the definition.
(mural is a kind of painting)
'of them urals' is the wordplay.
'of' indicates the answer is hidden within the clue.
'MURAL' can be found hidden inside 'them urals'.
(Other definitions for mural that I've seen before include "Large wall painting" , "Wall design" , "Artwork" , "Wall-painting" , "Painting on a wall, fresco" .)