The Underground Overlay is an overlay which displays the Terrain types of the soil. These terrain types are based on BRO data.
Additionally, the overlay displays underground objects from Risicokaart, such as pipes and underground storage of hazardous substances.
Additional information displayed in hover panel
When clicking on a specific location in the map, the hover panel gives additional information over the terrain type above ground, the underground and the height.
When clicking on a specific object, the type of object and additional information is given.