Great Rocks Dale

[4]: 167 In 1867, an extension of the Manchester, Buxton, Matlock and Midlands Junction Railway was opened, running through the valley between Peak Forest and Millers Dale.

[5] Given its economic importance, the boundary of the Peak District National Park was carefully drawn to exclude the dale.

[6] By 1973, Tunstead was the largest quarry in Europe, and permission to extend it into the National Park was rejected on the grounds that there was sufficient stone to last until at least 2000.

[9] In 1932, quarrying opened a fissure which contained remains of bison, Irish elk and deer, washed down from the surface in the distant past.

[10] In 1957, the painter Peter Lanyon visited the valley to study the faces of the quarry, seeing them as revealing both the geological and human history of the area.