You could cause some carnage by felling a tree that size in one go, people, cars, power lines, property etc, notice the accuracy of that last drop, Eric bristow couldn't have been any more accurate
I heard one very close by last year in a Northumbrian woodland, and that was the first one I can recall hearing, on a different note Les from the arboriculture course mentioned a supervisor at work bending over in her skirt whilst perched on some lifting device to which he exclaimed, the last time I saw a hole like that I was standing in front of a cuckoo clock