We have two willow trees in our back yard. They were trimmed back twenty-some-odd years ago the wrong way and they grew back really weak. Every year-or-so decent-sized bough and branches fall, but this is one of the once-every-five-years breakage that causes more damage than to the tree itself. There is an evergreen tree uprooted and buried underneath the pile of branches. There was also a split-rail fence that has been smashed.
Needless-to-say, the two trees are coming down soon. It was originally going to be only one of the two, but the one that lost this bough is the other one, the one we were going to save.
The playhouse is around 12-15 feet high at the peek. That means that bough on top of it is somewhere around 25 feet long, if not 30. This bough is from the tree that was set to be cut down.
In the above shot, you can see on the left-hand tree the spike of the major bough that fell from the tree that was not slated to be cut.