The Kymijoki is a significant river in southern Finland, flowing approximately 200 kilometers. It originates from the Kymijärvi lake and empties into the Gulf of Finland. The river is known for its diverse ecosystems and is a popular destination for fishing, kayaking, and other outdoor activities. Historically, the Kymijoki has played an important role in the region's economy, particularly in timber transport and hydroelectric power generation. Several dams along the river harness its flow for energy production, contributing to the local power supply while also supporting recreational activities and tourism.