From Archaeo News, <a href="http://www.stonepages.com/news/archives/000735.html">3000-year-old Chinese tomb found</a>:

<quote>The discovered cemetery covers an area of more than 115 acres and includes about 10 tombs built into the side of the Fenghuang Mountain in Qishan County, near the city of Baoji in the province. The tombs are aligned in the shape of a pyramid, with the biggest one at the top. The number of tombs increases on the lower levels, said sources with the Shaanxi provincial Archaeological Research Institute. Archaeologists from Peking University, Shaanxi provincial and Baoji municipal archaeological institutes are surveying the site.</quote>

The Zhou dynasty held power from BCE 1027-777.  Archeologists have discovered many Shang and Zhou tombs in the western, lesser-populated half of modern China.