The 볼가 강 (Volga River) is the longest river in Europe, stretching about 3,530 kilometers (2,194 miles). It flows through central Russia and empties into the 카스피 해 (Caspian Sea). The river is vital for transportation, irrigation, and hydroelectric power, supporting the economy of the surrounding regions. The 볼가 강 is also known for its cultural significance, as it has been a crucial waterway for trade and communication throughout history. It passes through several major cities, including 카잔 (Kazan) and 볼고그라드 (Volgograd), and is home to diverse wildlife and ecosystems.