Zechariah 14:4, tells of a great earthquake
that splits the Mount of Olives in two,
causing a great valley.

As the Mosque of Omar and the Tribulation
Temple would be near the center of this
earthquake, it would seem that they would
be destroyed.

The split in the earth might indicate that
the earth swallwed them up. It would
cleanse the sanctuary and clear the way for
the building of the New Millennial Temple.