The Hukou Waterfall on Chinas Yellow River has very modest dimensions.
Its just 30 meters wide, increasing to 50 meters during flood season, and only 20 meters tall.
The riverbed abruptly narrows down from 300 meters to less than 50 meters turning the placid water to rapids.
The roaring waters then plunges over a narrow opening on a cliff forming a waterfall about 20 meters tall.
