About Pre History in the Dunes around Groet
The above document (alas in Dutch only) describes the archaeological evidence that has been found in the dunes.
For many Centuries the dunes were some of the more reliable pieces of solid ground in the north west of the Netherlands. The so called Schoorlse Duinen near the apartment have revealed plenty of evidence that people have had small farms in these dry but barren lands.
For those that understand Dutch: please have a look at the above document.
Museum "Huis van Hilde" in Castricum is definately worth visiting (next to the Castricum Train station).
To fully enjoy this museum a basic understanding of the Dutch Language would be needed though. Or a good guide. For more information contact the museum: https://www.huisvanhilde.nl/engels/
Having grown up in the Netherlands myself, most of the time I don't even think of the fact that the first 50 kilometers inland from the west coast of the Netherlands is below Sea Level (24% of the country). But now that we spend quite some time in Groet and found out that this Village is an exception to that rule I've become more aware of that feat of engineering. Groet is about 5 meters above sea level.
Just two kilometers to the north-west an impressive Dike can be seen: The Hondsbosse Zeewering. This defence was not always here. In 1421 during the so called "Saint Elisabeth's flood" the storm battered this historically weak spot in the dunes that stood here and they were wiped away for a 5 km stretch and the sea water even reached the city of Alkmaar. The Dike starts at the hamlet of Camperduin. The Village of Petten disappeared all together and was rebuild a bit more inland. A monument has been erected to remember the old village of Petten and the people that lived there.
In 2015 the Hondsbosse Zeewering became a so called "sleeping water defence". In front of the dike 30 million cubic meters of sand created the Hondsbosse Duinen or Hondsbosse Dunes.
Camperduin itself also has a place in history. It was the location, just of the shore, where the British and Dutch held their so called "Battle of Camperdown" on the 11 of October 1797. The British won this time around and took 11 dutch ships as booty. In the centuries that followed many a Royal Navy ship was called HMS Camperdown.
The Battle of Camperdown (Camperduin)
on the 27 of August of this year a coalition of Russian and British soldiers landed on the beach of Callantsoog (Just north of Groet) with a mission to rid the low lands of their French over lords. After the collapse of the VOC the Netherlands had become weak and a vassel state to the French revolutionaries. In 1799 Napoleon had taken power and put his brother Lodewijk in control of Holland. Lodewijk claimed the Palace on Dam square in Amsterdam. The french needed the Dutch fleet for their geo-political plan to invade Britain. This joint expedition wanted to destroy the Dutch Fleet and conquer Amsterdam. The plan failed, the Bataafse resistance was stronger than expected, and on the 19th of November all Russian and British forces had left. The fighting did leave the area in tatters though. Even nowadays some small reminders of this tumultuous time do exist.
The landing at Callantsoog.
During world war 2 the dunes were part of the Atlantic Wall that ran from the north of Scandinavia all the way to the Pyrenees. There is still quite a few bunkers hidden away and you might run into these remnants of the past while you explore the dunes.