Police said that many bodies remained buried under a layer of silt left by the floodwaters.

Under a layer of silt, one finds argillaceous chalk and flints.

Because of the surface layer of silt loam and slow permeability in the clayey subsoil, the soils are ideal for rice production.

And from space, the right camera delves beneath the layers of silt to give a clear image.

The river flows atop layers of silt that built up within an ancient river valley around 10,000-15,000 years ago.