The longest river in Europe is the Volga River. Flowing through western Russia, the Volga stretches approximately 3,530 kilometers (2,194 miles) from its source near the Valdai Hills to its mouth at the Caspian Sea. The river plays a vital role in the ecology and economy of the region, providing a critical waterway for transportation, irrigation, and fishing. Historically, the Volga has been significant in Russian culture, serving as a source of inspiration for literature and music. Its extensive drainage basin also supports diverse wildlife and ecosystems, making the Volga a vital natural resource in Europe.