Roadworks in the Torenvalklaan, Leidschendam. Concrete pavers, in more or less the shape and colour of red bricks, are placed on a sandbed. The layer of sand in this neighborhood is approximately 2 meters deep, put on top of what used to be low lying marshy meadows, to stabilise the surface.
<a href="//commons.wikimedia.org/wiki/User:Takeaway" title="User:Takeaway">Takeaway</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>