The first phase of the opening of the longest tunnel in Greece, six kilometres in length, was reported on Monday with an explosion at the underground worksite in the central Thessaly province.
Works for the tunnel, which bypasses the winding and rockslide-plagued Tempi Valley on the main Athens-Thessaloniki highway, began in August 2008 in both directors -- the southern end at the mouth of the valley, and the northern end at the Omolio township.