I'm fairly experienced, but this tree got me thinking. It's an Oak. It's alive and looks healthy but got damaged by something growing. It's split on one side and has an emptiness that goes inside the tree for 2 feet above the split. The emptiness is not big, starts like 4 inches and then gets smaller.
See pics.
Any advice on how to approach this?
See pics.
Any advice on how to approach this?