The Rio Ebro is the longest river in Spain, stretching approximately 910 kilometers. It originates in the Cantabrian Mountains and flows eastward, eventually emptying into the Mediterranean Sea. The river passes through several important cities, including Logroño and Zaragoza, and is known for its rich biodiversity and scenic landscapes. The Ebro River plays a crucial role in agriculture, providing irrigation to the fertile plains of the Ebro Valley. It is also significant for its historical importance, having been a vital waterway for trade and transportation since ancient times. The river's basin supports various ecosystems and wildlife.