MAP WITHIN A MAP is a type of map that contains a smaller map within the larger map. This type of map is often used to provide more detailed information about a particular area or region. The term 'INSET' is used to describe this type of map, which stands for 'inserted map'. An INSET map can be used to show a different scale or different area than the main map. It can also be used to provide additional information such as population density or other geographical features.