cemetery with little mounds near dunhuang (south-western area)

Hi. I've seen on the web very nice photos about a cemetery with mounds. I looked for some informations about this -buddhist?- cemetery on the web, but I didn't found anything. Could somebody tell me if it's a really buddhist cemetery and if the people have been using it as a burial place yet (seeing fresh fruits on the bench i think "yes") ? I've seen that those mounds are inscribed in a square enclosure. Are those family enclosures? If someone knows something more about it, could he/she give me some informations? Thanks for the attention.
Best regards
Cristina Casadei