From The Daily Star:

Dozens of workers were busy covering old Sidon’s Frères archaeological site Monday, to protect a major new discovery unearthed by a delegation from the British Museum.
“A small contingent of the British Museum/Directorate General of Antiquities of Lebanon team of archaeologists discovered a new deeply concealed room,” read a statement released by the delegation.
The newly discovered monumental room is believed to be an extension of the underground Temple of Sidon, which dates back to the Bronze Age.
This finding comes as workers prepare the foundations of a new national museum, which will be established beside the archaeological site. Construction of the museum led to urgent excavations at the site last month.
Ten years ago, the delegation discovered an underground “holy of holies” room, dating back to 1300 B.C., where ancient residents are believed to have worshipped their gods. The newly discovered room was found adjacent to it, and is thought to be an extension of the site’s temple. It is believed to have been used by high-status members of the community.

The story continues to provide more of the significance of this discovery as well as plans for the new museum.