One of my recent customers allowed me to take some firewood from their property. I found a couple of fallen oaks that were almost petrified. They were elevated at least 1' off the ground because of the rocky torraine. This is in a heavely wooded area. How long will an oak tree season before it begins to rot? The interior of the splits measure around 30% after cut from the log. I am wondering how long these trees have been down?