clipped from: dsc.discovery.com 
March 11, 2008 -- Greek workers discovered around 1,000 graves, some filled with ancient treasures, while excavating for a subway system in the historic city of Thessaloniki, the state archaeological authority said Monday.
Some of the graves, which dated from the first century B.C. to the 5th century A.D., contained jewelry, coins and various pieces of art, the Greek archaeological service said in a statement.
Thessaloniki was founded around 315 B.C. and flourished during the Roman and Byzantine eras. Today it is the Mediterranean country's second largest city.
Most of the graves -- 886 -- were just east of the city center in what was the eastern cemetery during Roman and Byzantine times. Those graves ranged from traces of wooden coffins left in simple holes in the ground, to marble enclosures in five-room family mausoleums.
A separate group of 94 graves were found near the city's train station, in what was once part of the city's western cemetery.