Four heads

I try to depict colourful human society by variability of wood. There is rowan head with a spruce background, larch head with pine background, oak head with bluish pine and pear wood head with walnut background. Three of the heads depict basic human races – white, yellow and black. Last head focus from outside view into inside values – pear wood and human reveal its best when you go deep. Background wood was just chopped without any shaping – as pure as could be.