1.   As it happens, the tunnels are closed, having been rendered unsafe by the new excavation.

2.   But new excavations in the ruins of the ancient city of Harappa suggest an earlier and presumably independent origin of Indus writing.

3.   New excavations are underway in regions that have been little studied.

4.   The new excavations, Gibson said, have turned up remains of a monumental city wall and an imposing solidly constructed building.

5.   The new excavation has found evidence that households devoted space to ritual as well as domestic uses.

6.   A complete study of the surrounding buildings, new excavations and re-erections are planned in the future.

7.   The new excavations, which began two years ago, have given archaeologists a look at the many layers of more recent Roman history lying atop the ruins.

8.   They warn that new excavations have exposed even more delicate ruins to the elements.