Michael Westley on Geograph The Ryton Monolith. This piece of 450 million year old granodiorite from the Mount Sorrel Quarry in Leicestershire has generously been donated by Barbara and Roy Prince propietors of Airtsy Ryton Pools Country Park, Ryton Colour: This plaque is purple, white and green glass claret orange purple clear bronze grey stone red slate wood blue black brass multicoloured pink brushed metal green maroon film cell green and red Belgian Blue Stone red and black yellow terracotta marble brown silver white gold Wikimedia: Flickr: Google Streetview OpenStreetMap