The viyagasa is neck yoke that is fitted on bovines in order to enable them to pull a plough (nagula) together.
Attaches the nagula to bovines so that they can drag it across the paddy field.
The wooden yoke is fitted to the necks of two bovines. A groove is made at each end of the viyagasa to fit over the neck of each bovine. A ridge is made at the center where the nagula is placed and tied using an amuthu bana.
The two bovines that the viyagasa is attached to are known as 'aluth polaya' and 'pita polaya'