Washington National Cathedral is still undergoing repairs, 10 years after an earthquake damaged portions of the iconic structure. (Marvin Joseph/The Washington Post)

The heads of Old Testament prophets lie on the ground near the south entrance of Washington National Cathedral, scaffolding surrounds the central tower and, upon close inspection, parts of the ornamental limestone exterior are cleaner than the rest.

Ten years after a 5.8-magnitude earthquake hit the region, damaging the cathedral and other buildings, stone masons of the District’s gothic place of worship say their work to repair the building is halfway complete.