As a kid I remember eating the tasty walnuts from this tree. I think this single tree has allowed generations of squirrels to survive on my grandparent's property. :) Unfortunately, a huge crack has developed in one of the two main trunks. We've done some pruning to lighten the weight on that side, but it will likely go in a big wind.
See the 2D view for the one image of the crack that didn't make it into the photosynth.