Some are quite large, though over time they have gradually weathered away.

Paint is weathered away after years of exposure to rain.

The paint had been weathered away, giving the house a uniform gray look.

This is not surprising considering its great age; such fragments would have weathered away.

Tiny figures had been carved in relief around the opening, most of them weathered away.

Through time the soft rocks weather away or erode by the action of streams.

Hard stone remains while soft has been weathered away.

The latter is slowly being weathered away by changing values and encroachments.

On Earth it would have been weathered away by wind and rain in a geological twinkling.

Most of their work has now weathered away.