What the picture shows can't be called excavation - a word normally reserved for archiological digs! What I see looks more like some renovation work to fix a leaking pipe or install new ones. The picture also shows that this is being done on the grounds of the Masjid Al-Aqsa. No one in his right mind would do archiological excavation within the shown area!
Two mortar shells explode in Golan Heights, no casualties or damage reported (Haaretz)
from the article: Waqf Temple Mount excavation raises archaeologists' protests