With the vast percentage of its land comprised of hills andrugged mountains, Greece is one of the most mountainous countriesin Europe. Approximately 70 percent of the land cannot becultivated because of poor soil or because it is covered by forestsor is too mountainous. Agriculture is centered in the plains ofThessaly, Macedonia, and Thrace, where corn, wheat, barley, sugarbeets, cotton, and tobacco are harvested. Greece has farms, butmuch of the terrain is better suited for grazing for sheep andgoats or for vineyards, orchards, or olive groves.