I don’t recall ever seeing a round pushing out the heartwood. First time I’ve ever had some Little leaf Linden, so maybe it’s something Linden does. The live wood must be drying and contracting pushing out a log. Wood around the heartwood splitting off
I've seen that a bunch. I used to save those heartwood pieces for the smoker when I had tons of apple.
Sorry, some of us can’t or don’t have time to look at our phones when working. LoL Or I left my phone on the home office desk while in fact pushing one out. I have seen that here on some rounds, Chud