The Ebro Basin is a significant geographical area in northeastern Spain, primarily defined by the Ebro River, which is the longest river in the country. This basin covers approximately 85,000 square kilometers and includes various landscapes, such as mountains, valleys, and plains. The river flows from the Cantabrian Mountains to the Mediterranean Sea, playing a crucial role in the region's ecology and agriculture. The Ebro Basin is known for its rich biodiversity and is home to several important cities, including Zaragoza and Lleida. The area is also vital for irrigation, supporting the cultivation of crops like fruits and vegetables. Additionally, the basin has historical significance, with archaeological sites that reflect its long-standing human habitation.