I Could Have Stored Stuff in There

I had to have a tree cut down in my yard today, because it's possible that it could have fallen on the house. I was skeptical at first, because it looked relatively healthy at the top, with green leaves and everything, but my neighbor/landscaper said it had been struck by lightning and had to go. As you can see, he was right. I've never seen a tree that hollow before, and apparently it was like that all the way to the top.

I've figured the one to the right, in the same clump, would go eventually, because it's leaned quite a bit for years. I suspect it's hollow, too, but it will fall away from the house.

(thanks to my 2nd MFR for the photos!)