In classical antiquity, the mouth of the loculus might be closed with a slab, plain, as in the Catacombs of Rome, or sculptural, as in the family tombs of ancient Palmyra.
During classical antiquity, the entrance to the loculus could be sealed with either a simple slab, like those found in the Roman Catacombs, or a sculpted design, such as those seen on the tombs of ancient Palmyra's families.