The Iskar River is the longest river in Bulgaria, stretching approximately 368 kilometers. It originates from the Rila Mountains and flows northward, eventually joining the Danube River. The river is known for its scenic beauty and is a vital water source for the surrounding regions. The Iskar River passes through several towns, including Samokov and Botevgrad, and is an important part of the local ecosystem. It supports various wildlife and offers recreational activities such as fishing and kayaking. The river also plays a significant role in hydroelectric power generation in the country.