Palestinian workers in the Gaza Strip have found dozens of ancient graves, including two sarcophagi made of lead, in a Roman-era cemetery — a site dating back some 2,000 years that archaeologists describe as the largest cemetery discovered in Gaza.

Workers came upon the site last year during the construction of an Egyptian-funded housing project near Jabaliya, in the northern Gaza Strip. Since then, crews have worked to excavate the 2,700-square-meter (2/3 acre) site with the support of French experts.

Now, what was once an inconspicuous construction lot — surrounded by a grove of nondescript apartment buildings — has become a gold mine for archaeologists looking to understand more about the Gaza Strip.