MEET THE FLINT STONES
'Dark bands of flint are <a href="http://www.j-archive.com/media/2011-10-20_J_30.jpg" target="_blank">visible</a> in <a href="http://www.j-archive.com/media/2011-10-20_J_30a.jpg" target="_blank">these</a> famous cliffs'
the Cliffs of Dover