KPIX CBS Evening News With Scott Pelley July 10, 2014 00:56:00
>> reporter: this is where the restoration work is happening. can you see the damage from the pollution still today? >> yes, on the surfaces, conservation yin gang told us, he is overseeing an ambitious effort to save the artwork in these ancient buddhist caves. >> reporter: what is it supposed to look like it doesn't look like much right now. >> imagine yin said, stunning and colorful paintings, a complete temple. we can hardly tell what they are now. 1600 years ago sculptures carved the grottoes into the sandstone cliffs of china. for centuries the soft sandstone was eroded by blasting winds...