Medicine Horn or Flask

This medicine flask was mede in Sarawak Indonesia.  The main body of the flask is animal horn.  The tip of the horn was carefully carved into the shape of a man.  The top lid of the flask is a carved piece of wood that shows a man with an offering bowl riding on the back of a horned, masked figure with very large eyes and mouth.  Two additional figures face opposite the medicine man.  The flask locks via a pin that goes through the horn and wood.