The Kalmthout Heath (Dutch: Kalmthoutse Heide) is one of the oldest and largest nature reserves of Flanders,[1] bordering the Netherlands and part of the Dutch-Belgian cross-border park De Zoom – Kalmthoutse Heide.[2] It used to be part of a vastly larger European heath landscape. Its name stems from its location: the Belgian municipality Kalmthout.[1]
It has been protected as a landscape since 1941, and officially became a state reserve (Dutch: staatsreservaat) in 1964 due to a petition of over 100,000 signatures.[3]