Turkey Oak (quercus cerris) is a relatively fast growing tree and is planted as an ornamental, ideal for windbreaks. This piece came from a very large tree, the crotch of which was about 3 metres in diameter, it has been fumed with Ferrous Sulphate which reacts with the tannins in the Oak darkening it. However because it's a chemical reaction only the surface changes colour and by carving through the natural colour of the wood…