National Road 20 (Greek: Εθνική Οδός 20, abbreviated as EO20) is a single carriageway road in northwestern Greece. It links the cities of Ioannina and Kozani via Konitsa and Siatista. It passes through the Ioannina, Kastoria and the Kozani regional units. Since the opening of the A2 motorway (Egnatia Odos), it is no longer the fastest connection between Kozani and Ioannina. The section between Ioannina and Kalpaki is part of the European route E853.
Mount Smolikas (Greek: Σμόλικας; Aromanian: Smolcu) is a mountain in the Ioannina regional unit, northwestern Greece. At a height of 2,637 metres above sea level, it is the highest of the Pindus Mountains, and the second highest mountain in Greece after Mount Olympus. The mountain consists of ophiolite rocks. During several periods in the Pleistocene the northern and eastern cirques and valleys were glaciated. The last glaciers of this area retreated around 11,500 years ago. It is drained by the river Vjosa to the south, and the river Vourkopotamo (a tributary of the Sarantaporos) to the north. There is a small alpine lake called "Drakolimni Smolika" near the summit, at about 2,200 metres elevation. Nearby mountain ranges are Tymfi to the south, Gramos to the northwest, Vasilitsa to the southeast and Voio to the northeast.
The higher elevations, above 2,000 metres, consist of grasslands and rocks, and there are deciduous and conifer forests at lower elevations. The mountain lies completely within the municipality of Konitsa, the main villages around the mountain being Agia Paraskevi to the north, and Palaioselli, Pades and Armata to the south. The town Konitsa lies 15 km southwest of Smolikas. The Greek National Road 20 (Kozani - Siatista - Konitsa - Ioannina) passes west of the mountain.
Voio (Greek: Βόιο, Vóio; Ancient Greek: Βόιον - Boeon) is a mountain range in the southwestern Kastoria and western Kozani regional units in Macedonia, Greece. The mountain is part of the Pindus mountains. Its highest elevation is 1,805 m. It is a densely forested and sparsely populated mountain range. It is drained towards the river Sarantaporos in the west and towards the Aliakmonas in the east. The nearest mountain ranges are Gramos to the west and Smolikas to the southwest.
The nearest villages are Pentalofos in the east, Eptachori in the west and Kypseli in the north. The municipality Voio, named after the mountains, is situated in the eastern part. The Greek National Road 20 (Kozani - Konitsa - Ioannina) passes through the mountains, 2 km south of the highest point. The first home of the Boeotians was the mountain Boion; the mountain gave them their name.
Kalpaki (Greek: Καλπάκι) is a former municipality in the Ioannina regional unit, Epirus, Greece. Since the 2011 local government reform it has been part of the municipality Pogoni, of which it is a municipal unit. It is situated about 30 km (19 mi) northwest of Ioannina, and southwest of Konitsa. The municipal unit has an area of 116.756 km, and the community 13.189 km. The Greek National Road 20 connects Kalpaki with Ioannina and Konitsa. The GR-22 connects Kalpaki with Kakavia, the border crossing into southern Albania.
Vourinos (Greek: Βούρινος) is a mountain range covering the eastern Grevena and southern Kozani regional units in Greece. Its highest elevation is 1,866 metres (6,122 ft). Its length is approximately 30 km (19 mi) from northwest to southeast. It is drained by the river Aliakmonas and its tributaries. There are forests on the northern slopes and the lower areas, the higher elevations are covered with grasslands. The nearest mountain ranges are Askio to the north and Kamvounia to the southeast.
The nearest villages are Chromio to the east, Palaiokastro to the northwest and Pontini to the southwest. The nearest larger towns are Grevena to the west and Kozani to the northeast. The A2 motorway (Igoumenitsa - Ioannina - Kozani - Thessaloniki - Alexandroupoli) and the Greek National Road 20 (Kozani - Konitsa - Ioannina) pass along its northern edge.