studio were asking what is that square in front of that s the garage door. megyn: oh. reporter: that s the garage door, and you can see right above it to the left the inspectors were back out meg mg sorry. give us a sense of how the mud came down. where did it come from such that it could have knocked the door off like that. reporter: well, if you look up here to the north, those are the san gabriel mountains. remember the rose bowl and the bcs championship game on new year s? that is those mountains. in the october station fire, remember that huge fire in southern california? what happened is all the trees, all the vegetation that normally would hold the rocks and mud in place is gone. so the hillsides got saturated from rains two weeks ago and then again this weekend, so it literally flows right down this road like a river. you see these concrete k rails we call them here in california, they put them to try to contain