Tags: Military Structure.
The Metaxas Line was a chain of fortifications constructed along the line of the Greco-Bulgarian border designed to protect Greece in case of a Bulgarian invasion after the rearmament of Bulgaria. It was named after Ioannis Metaxas then Prime Minister of Greece and chiefly consists of tunnels that led to observatories emplacements and machine-gun nests. The constructions are so sturdy that they survive to this day some of which are still in active service.