SnapMap is a feature within the Snapchat app that allows users to see their friends' locations on a map in real-time. Users can choose to share their location with friends or keep it private. The map displays various activities, such as events and stories, happening nearby, making it easier to connect with others. The map is interactive and provides a visual representation of where friends are located, along with the option to explore public snaps from different areas. Users can zoom in and out to view different locations and discover content shared by others in their vicinity.