I came up with 8. The first 3 show large growth spurts and then the growth settles down for the next 5.Not sure exactly how to count the rings here. Any thoughts?View attachment 253746
This guy knows his stuff!576 years.
It will get closer than any other method, of which there are none.Counting rings is not an accurate way to tell the age of a trunk. Many trees can grow more than one ring in a season. Summer drought, fire and other stress will cause growth to slow and give an extra darker ring.