But below us and in front of us there is nothing but mist, mist that is dense and impenetrable. All we know is that the river flows onwards. On and on it goes, towards an unknown sea. But now let us quickly drop down in our plane towards the river. From close up, we can see it is a real river, with rippling waves like the sea. A strong wind is blowing and there are little crests of foam on the waves. Look carefully at the millions of shimmering white bubbles rising and then vanishing with each wave. Over and over again, new bubbles come to the surface and then vanish in time with the waves.
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