In relation to the events of September 11th, 2001, dreams of ground zero represents an uprooting and/or crumbling of that which appeared to be solid and indestructible.
Dreaming of ground zero is a breakdown/breakthrough dream, as in the Buddhist deity of death and destruction that is an essential catalyst to transformation and change. This dream can symbolize the necessity to come down to earth and connect with what is truly important in life and reassess your values. This dream could also signify that you are processing and venting out your feelings about the events of September 11th or the war on Terrorism.
See Also: September11th, World Trade Center and Venting Dreams.
[1]