The Arve River (right) flowing into the Rhône in Geneva, Switzerland

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The Arve River (right) flowing into the Rhône in Geneva, Switzerland

That’s the Arve river on the right, flowing into the Rhône. This point where the two rivers meet is just west of the city center in Geneva, Switzerland. The Arve’s much lighter color is due to the silt it picks up as it flows out of the Alps. From here, the Rhône will continue on—in a mostly southerly direction—through southeastern France toward its mouth on the Mediterranean Sea.