The Blue John Mine, near Castleton, Derbyshire before 1899

This photograph, titled "The Blue John Mine, near Castleton, Derbyshire," was captured by Alfred Brothers before 1899. This image showcases a view inside a mine, likely a Blue John mine, known for its distinctive blue fluorite. Brothers was a prominent photographer known for his technical skill and innovative use of light, which is evident in the clarity of the image and the play of light and shadow in the mine's interior. The photograph is likely part of his exploration of the industrial landscape of Derbyshire. It's a glimpse into the workings of a mine and the geological formations that were so important to the region's economy.