 There are three types of "tongkonan" which are classified according to their function in society.A "tongkonan layuk" ('grand tongkonan') or "tongkonan pesio' aluk" ('aluk maker') is the original ancestral home in which the "aluk" of a particular "adat" territory were established.The Grand Tongkonan is the seat of a kinship grouping that traces its descent from a single founding couple.