Grevena (regional unit) in the context of "Haliacmon"

Western Macedonia (Greek: Δυτική Μακεδονία, romanized: Ditikí Makedonía, Greek pronunciation: [ðitiˈki makeðoˈnia]) is one of the thirteen administrative regions of Greece, consisting of the western part of Macedonia. Located in north-western Greece, it is divided into the regional units of Florina, Grevena, Kastoria, and Kozani. With a population of approximately 255,000 people, as of 2021, the region had one of the highest unemployment rates in the European Union.

Chasia (Greek: Χάσια) is a forested mountain range in the northern Trikala (Thessaly) and the southern Grevena (Western Macedonia) regional units, northern Greece. It is an eastern extension of the Pindus mountain range. The elevation of its highest peak, Kratsovo, is 1,564 m (5,131 ft). It stretches from the village Korydallos in the west to Kerasoula in the east, over a length of about 35 km (22 mi). The nearest mountains are the Antichasia to the south, the Kamvounia to the northeast and the Lygkos (northern Pindus) to the west. It is drained by tributaries of the Aliakmonas to the north, and by the Pineios and its tributary Mourgkani to the south.

Two municipal units were named after the mountains: Chasia, Grevena and Chasia, Trikala. Villages in the Chasia mountains include Kakoplevri and Oxyneia in the west, Agiofyllo, Trikokkia and Achladea Skiti in the central part and Asprokklisia and Kerasoula in the east. The A2 Egnatia Odos motorway (Igoumenitsa - Ioannina - Kozani - Thessaloniki) runs west of the mountains, and the Greek National Road 15 (Kalambaka - Grevena - Kastoria) passes through the central part of the mountains.

Grevena (Greek: Γρεβενά, Grevená [ɣreveˈna]; Aromanian: Grebini) is a town and municipality in Western Macedonia, northern Greece, capital of the Grevena regional unit. The town's current population is 12,515 citizens (2021). It lies about 420 kilometres (261 miles) from Athens and about 180 km (112 miles) from Thessaloniki. The municipality's population is 25,905. Grevena has had access to the A2 motorway (Egnatia Odos) since the early 2000s, which now connects Igoumenitsa with Thessaloniki and Alexandroupoli at the border with Turkey. Mountains surround the municipality, which is situated by the river Greveniotikos, which itself flows into the Aliakmon. Other significant towns in the municipality are Amygdaliés and Méga Seiríni. Grevena Municipal Museum is located in the town.

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.

Lyngos (Greek: Λύγκος), also transliterated as Lygos, is a remote mountain range in the eastern Ioannina and the western Grevena regional unit in northwestern Greece. It is a part of the Pindus mountain range. Its highest point is the Avgo, at 2,177 m elevation. The Lyngos mountains lie in a horseshoe shape around the Valia Kalda (Βάλια Κάλντα) valley, which exits towards the Aoos valley to the west. The Valia Kalda is part of the Pindus-Valia Kalda National Park, founded in 1966. It is one of the coldest and wettest regions of Greece. The mountains are densely forested, with alpine meadows in the highest elevations.

The Lyngos mountains are drained by the river Aoos to the west and by the river Venetikos, a tributary of the Haliacmon, to the east. The nearest mountain ranges are the Vasilitsa to the north, Chasia to the east, Lakmos to the south and Tymfi to the west. The nearest villages are Vovousa to the west and Perivoli to the north. The town Metsovo is about 15 km to the south.