The Essay Cornerstones Episodes Available now
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![](https://ichef.bbci.co.uk/images/ic/320x180/p0c10h49.jpg)
Chalk
5/5 Alyson Hallett on being drawn to chalk landscapes and the large horse at Westbury in Wilts
![](https://ichef.bbci.co.uk/images/ic/320x180/p0c10h49.jpg)
Fire Rocks
4/5 Novelist Sarah Moss discusses basalt and dolerite, the fire rocks that underpin castles.
![](https://ichef.bbci.co.uk/images/ic/320x180/p0c10h49.jpg)
Coal Mines
3/5 Writer Paul Evans traces a family line back through Shropshire's seams of coal.
![](https://ichef.bbci.co.uk/images/ic/320x180/p0c10h49.jpg)
Millstone
2/5 Poet Helen Mort reflects on the Peak District's Stanage Edge, famed for its millstone grit
![](https://ichef.bbci.co.uk/images/ic/320x180/p0c10h49.jpg)
Quartz
1/5 Linda Cracknell reflects on the appeal of the quartz on Ben Lawers, her local Munro.