This trench was digged likely during WWII, perhaps on the 12th October 1944
From 1940 the state border between Hungary and Romania was only 15 km south from Perjei-Magura. In the Second World War in October 1944 the unified Sowiet and Romanian forces attacked this border. On the 11th October the Hungarian army withdrew its forces from the border into Mountain Meszes. But they could keep their positions here only for a week. At Pass Plopis there is a small memorial written in Romanian language, reminding people about the recapture of the area by the Romanian forces in 1944.