They had stopped before a pile of relatively new stone-work, where heavy blocks had been laid to repair some ancient foundation, and to make it ready to support a new building. For the most part it was an uninterrupted bulwark of massive stones; but in one place a long slab had been laid like a lintel across a gap between two others, creating a low squarish opening through which the cellar on the other side could drain if need be. Carved on that lintel in spidery Roman letters was: