The Magdalena River is Colombia's main river, flowing north for approximately 1,528 km (949 miles) through the western half of the country. It is navigable by boat for much of its lower course, despite shifting sandbars at the delta's mouth, all the way to Honda, at the foot of the downstream falls. The river flows through the Magdalena Valley.
The Cano Cristales River, located in Meta Province, Colombia, is often called the "Five-Colored River" or "Liquid Rainbow" due to its vibrant colors. The river is famous for its unique color display, created by the presence of aquatic plants and algae, which change color depending on the time of year and water conditions.