The Czech Republic’s central European landscape is dominated by the Bohemian Massif, which rises to heights of 3,000 ft (900 m) above sea level. This ring of mountains encircles a large elevated basin, the Bohemian Plateau. The principal rivers are the Elbe and the Vltava. The country has the highest human development in Central and Eastern Europe, ranking as a “Very High Human Development” nation. It is also ranked as the third most peaceful country in Europe and most democratic and healthy country in the region.