A patina layer takes many years to develop under natural weathering.

What humans left intact was still subject to natural weathering.

Over the centuries, the bedrock atop the mountain has been exposed through natural weathering of the upper layers of soil strata.

Ongoing animal burrowing, natural weathering, and erosion are also degrading the site.

There are several romantic explanations for the stone's shape, but it was formed entirely by the natural weathering of the exposed outcrop.

At Spittal, near Drymen, is a footprint which may be due to natural weathering.

For example, the natural weathering of the steel roof requires a value placed on what John Ruskin calls the "golden stain of time."

The natural weathering of the cave can leave behind concentrations of aluminosilicates which were contained within the bedrock.

Graffiti combined with natural weathering has made the actual petrogyphs difficult for visitors to see.

This is due to a number of things including natural weathering, and being built in a bad type of rock.