How much of Greece is covered by mountains?

Mountainous terrain covers approximately four-fifths of Greece, a landscape characterized by its complexity and rugged beauty. These mountains are often deeply dissected, forming a series of chains that run northwest-southeast and enclose narrow valleys and small basins.1

In contrast, the lowland areas—which include riverine plains and thin strips of coastal land—account for only about one-fifth of the country's total land area. Despite their limited extent, these lowlands have historically played a vital role in the life and development of the nation.1