| 1 | I' ve explored ancient castles, palaces, temples, tombs, catacombs and labyrinths. | |
| 2 | At the bottom of some is the brickwork of tombs, marking the area as a cemetery. | |
| 3 | Recent laboratory studies have revealed that some ancient mummies and tomb walls do indeed carry molds. | |
| 4 | These substances may make tombs sound dangerous, but scientists seem to agree that they are not. | |
| 5 | Mr. Hamdani said tombs were the most highly valued targets - of archaeologists and looters alike. |