Like dozens of places in Crete, also the area of Kokkino Horio was chosen by the German Nazis during the Second World War to construct several tunnels and to install canons. The location they chose for the most important of these tunnels was the hill of Drapanokefala that offers panoramic inspection of the entire bay of Souda.
For the construction of this very large project, the Germans violently forced the residents of province Apokoronas to work under dramatic conditions.
At this point they installed many weaponries and three cannons. They also installed and a cable carrying soldiers and supplies to the emplacement on top of Drapanokefala.