The Toba Batak traditionally believe that they originate from one ancestor "Si Raja Batak", with all Margas, descended from him. A family tree that defines the father-son relationship among Batak people is called tarombo. In contemporary Indonesia Batak people have a strong focus on education and a prominent position within the professions, particularly as teachers, engineers, doctors and lawyers. Toba Batak are known traditionally for their weaving, wood carving and especially ornate stone tombs. [Wikipedia]