The last working slate mine in England. Guided mine tours deep underground, browse the visitor centre. Learn the history of the best and most beautiful Honister Green Slate. Join a mine tour and go deep underground. Explore the awesome caverns, learn how the Victorian miners worked using hand tools by candle light. Those who dare and are over 1m30cm can try the Via Ferrata! Honister Slate Mine has live displays of traditional slate processing skills which you will see on the free Working Factory Trail.