Enjoyed that thank you for posting
Brings back great memories I first went to Castleton in 1976 at the age of 15 me and my mate went there in his Reliant supervan we walked up mamtor, went down both the caves bought some blue John for our parents.
Then 15 years ago myself & my wife rode there and did the speedwell cavern and the devils Arse and did Matlock & Buxton and snakes pass