On a recent climb I noticed that a large limb coming out of the main trunk of the tree had significant bark inclusion at the joint. The evidence is bulging structure at the joint on each side and sap weeping from the joint.

The limb is 2-2.5 ft in diameter, is otherwise healthy and extends up at a 40 degree angle around 50+ ft. It's successfully bearing considerable weight but the inclusion makes me nervous.

Question is, would you climb on it?
-moss