branchbuzzer
Undiagnosed
Last year, when I was scrounging dead wood to help us make it through the winter, I found a lot of locust tops in my woods, left over from the logging 8 years prior. None of it showed any sign of rot, except for the hollow center that is so common with those trees. Most of the oak laying around is worthless, unless it was propped off the ground and in decent sunlight. But even the locust laying on the ground was rock-solid and ready to go straight into the stove, with nary a hiss to be heard. I have a blowdown snag I'm going to winch down and cut up, I bet I get more than a cord out of it.
I read somewhere recently that locust can last up to 100 years after it dies.