What is the largest waterfall by width?
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The largest waterfall by width is the Khone Phapheng Falls on the Mekong River in southern Laos. It spans nearly 10.8 kilometres (6.7 miles) and has an average height of 21 metres (69 feet). While not the tallest, its sheer volume of water and width make it impressive. The falls are a critical part of the local ecosystem and a popular tourist attraction. They also serve as a natural barrier, preventing upstream navigation on the Mekong River.