Here are a couple pieces of wood that have been seasoning for about 75 million years and no way can I get them to burn. They are petrified wood from the Western Sahara in Egypt. My brother brought them over for me last year. We both think that the one looks just like a piece of old Hedge fence post. Brother thought that I would put them in the saw and make slabs. I thought they just looked too cool as is. I did cut the bottom flat and polished it.