The secret history of spruce

It's amazing to look inside a tree. Of course you can only do it afterwards, if you know what I mean. 

Here you can watch a tree grow from a scrawny sapling, year by year, into the substantial tree it became before Greg cut it down. This tree was a seedling in 1960, more or less.  

Some kind of insect made its home deep inside this tree. A happy insect, I imagine.

And here is the story of how, long ago, two young trees met and fell in love. They probably had a lot in common. Eventually they grew together until it was hard to tell one from the other. But later they split up.