Many places like Massada, Tel Dan, Tomb of Ttankaman in Egypt, etc...were not excavated for thousands of years. The point is why shouldn't any excavations be done with cooperation of Palestinians and Israelis? Unless one side has something to hide.....
Defense Ministry says had no knowledge of alleged improper defense deals by Gal Hirsch (Haaretz)
from the article: Government 'tried to bury' report on Temple Mount excavations