Þjórsá is the longest river in Iceland, stretching approximately 230 kilometers. It originates from the glacier Vatnajökull and flows through the southern part of the country before emptying into the Atlantic Ocean. The river is known for its powerful currents and scenic landscapes, making it a popular spot for outdoor activities. The Þjórsá river basin is rich in natural resources and is home to several hydroelectric power stations, contributing significantly to Iceland's renewable energy production. The river also supports diverse wildlife, including various fish species, and is an important habitat for birds, enhancing the region's ecological significance.