Well protected between the roots of a thick beech, a first lonely wild hyacinth is growing. This month, some trees will be measured and marked (with a hammer as wooden seal stamp), they will be sold by auction in June. To measure the trees, the foresters use a digital measuring clamp for the first time. After determining the species of tree and measuring its circumference, the bark of the tree is removed with the ax-side of the hammer, and with the Royal stamp-side the shape of a lion is beaten in the heartwood.