Napaltjarri paints her father country, which is a sacred Walpiri territory associated with narratives to the 'water snake'. The oval shapes in her paintings are iconographic representation of the swamps and lakes near Nyrripi (Talarada) North West of Mount Liebig where Ngoia lives. She depicts the wet and dry characteristics of the country. This region is changed with the spiritual presence of the 'water snake' which lives beneath the surface. This is the area where her father was hunting in the past.