The River Ely is a river located in Wales, flowing through the city of Cardiff. It is approximately 20 miles long and is known for its scenic beauty and diverse wildlife. The river eventually joins the Bristol Channel, contributing to the region's ecosystem. The river has historical significance, with evidence of human activity along its banks dating back to ancient times. It is also a popular spot for recreational activities such as fishing, walking, and cycling, attracting both locals and visitors who enjoy its natural surroundings.