Description:Light Gray layer is useful for cartographic display of thematic overlay layers by simplifying the map surface and providing contrast to view desired layers more clearly.
Copyright:Esri, HERE, Garmin, (c) OpenStreetMap contributors, and the GIS user community
The Light Gray Overlay base map layer is turned on by default for improved visibility of layers that are selected for viewing. Viewing many layers over aerial imagery can be difficult to see clearly. ("#")