A border barrier fence between Finland, left, and Russia is seen in a forest near Pelkola border crossing point in Imatra, south-eastern Finland, Friday, April 14, 2023. (AP Photo/Sergei Grits) ...

The border fence project is estimated to cost a total of 380 million euros ($422 million) and is scheduled to be completed by 2026. Finland’s long eastern frontier runs mainly through thick forests.