108. Polderdash!
Bellingcat Geolocation: 108. Polderdash!
What is the identifier of this highlighted polygon?
The challenge requires identifying the official designation of the highlighted polygon on satellite imagery.
Looking at the prompt image, the rural layout is immediately striking: the agricultural fields are not divided into typical square or rectangular blocks, but are partitioned into razor-thin strips stretching like parallel ribbons across kilometers, separated by dark linear channels, with houses lining a single access road.
The first clue comes from the challenge title itself: Polderdash. Searching for the keyword polder reveals the quintessential Dutch system of reclaiming low-lying floodplains and marshes through dikes and pumping networks, as documented on Wikipedia
Looking deeper into Dutch landscape architecture and water management, the scene reflects three classic regional hallmarks: the ribbon parceling pattern known as Slagenlandschap or Strokenverkaveling from medieval Cope-ontginning peat reclamation, a dense network of sloten drainage ditches feeding into central achterwetering collector canals, and linear lintbebouwing settlements clustered strictly along elevated dykes to avoid unstable peat soil.
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With a strong geographic focus on the Netherlands, we examine satellite imagery across the low-lying agricultural plains. Across the country, three prominent lowland regions exhibit this distinct density of parallel ribbon parcels
Scanning the first candidate zone in the Groene Hart region within the province of South Holland, the bend of a linear settlement between parallel waterways matches the geometry in the challenge image
Zooming into the location confirms the strip sits between the town of Stolwijk and the village of Berkenwoude, bounded by regional drainage canals including Achterwetering, Reevliet, and Ringsloot
The exact geographic feature is located, but the challenge specifically asks for the identifier of the polygon. This farmland contains only a handful of scattered farmhouses along a dyke road, so it cannot represent an entire municipality or town. The standard administrative division small enough to define such individual rural parcels is a postal code. Opening Google Earth Web and enabling the Dutch Postal codes layer
Clicking directly on the highlighted polygon on the satellite map retrieves its 6-character Dutch postal code
2821 NV
