Found a Surprise Inside a Giant Oak Tree Stump While Counting Tree Rings to Estimate its Age
This video is about using dendrochronology, counting tree rings, to estimate the age of a very large oak tree broken off and killed by Hurricane Irma in 2017. We found an interesting anomaly in the center of the stump that I think you will find very interesting.
Dendrochronology
https://en.wikipedia.org/wiki/Dendrochronology