The Holy Family Classical Set - Made From Real Olive Wood- A Great Christmas Gift - Hand Made Height 22cm/9inches. The olive tree is a subtropical, broad-leaved evergreen tree. Some trees are dated to the time of Christ. After the harvest in October, the tree is cut and the old branches are left to dry for two years and then used to make these sets. Because it becomes very dry and solid it never changes details and keeps its very nice colors and specific lines that carry a history hundreds of years old!