 Though the main cave was restored in the 1970s , other caves , including three consisting of important sculptures , are still badly damaged . The caves were designated a UNESCO World Heritage Site in 1987 as per the cultural criteria of UNESCO : the caves " represent a masterpiece of human creative genius " and " bear a unique or at least exceptional testimony to a cultural tradition or to a civilisation which is living or which has disappeared " . 
 Though the main cave was restored in the 1970s , other caves , including three consisting of important sculptures , <a href='drop_aux' title='1'><mark>are</mark></a>still badly damaged . The caves <a href='uninflect' title='2'><mark>were</mark></a> designated a UNESCO World Heritage Site in 1987 as per the cultural criteria of UNESCO : the caves " represent a masterpiece of human creative genius " and " bear a unique or at least exceptional testimony to a cultural tradition or to a civilisation which is living or which <a href='been_done' title='3'><mark>has</mark></a> disappeared " . 
Doe da main cave was restored in the 1970s , other caves , including three consisting of important sculptures , still badly damaged . The caves was designated a UNESCO World Heritage Site in 1987 as per the cultural criteria of UNESCO : the caves " represent a masterpiece of human creative genius " and " bear a unique or at least exceptional testimony to a cultural tradition or to a civilisation which is livin or which done disappeared " .