Greece has several tall mountains such as Mount Athos at 6,670 feet and Mount Kedros at 5,827 feet. It also has long rivers like the Achelous at 2.1 miles and the Arachthos at 110 km. Greece has diverse ecosystems including forest-mountain, coastal-marine, and national forest parks. The climate features mild and rainy winters as well as warm and dry summers with plentiful sunshine throughout most of the year. While the government struggles with debt, most citizens are Orthodox Christians who speak English, French, Spanish, Italian or German and a small wealthy portion of the population exists. Greece operates as a parliamentary republic while working on economic recovery from huge debt