Is this the Nuclear Blast Hole beneath a WTC Tower that Dimitri Khalizov reported would result from a 150 KiloTon Bomb underground nuclear explosion???

This looks like rock that has been traumatically metamorphosed due to extremely high temperatures and pressures.
Someone said it looked like foam, but I do not think so. It would be called metamorphosis and the original rock was supposed to be Granite...
Chuck Boldwyn