In this series, these interventions are presented alongside physical alterations made to the Dutch landscape through a vast land reclamation project that began in the 16th Century and is ongoing. A third of the Netherlands lies below sea level and the dunes, dykes, pumps, and drainage networks engineered over hundreds of years have dramatically shaped the country’s landscape, providing it with huge swathes of arable land that would otherwise be submerged.
(via Dutch Landscapes at Mishka Henner / Earth Works)
“These interventions” refers to this.