When I loved In Glossop In 1970's .
I used to cycle to Derwent Valley for an outing to check it out Then Later on explored all the areas nearby off the Snake pass like Bleaklow ,Alport castles and Ladybower .
But found Derwent Valley a walking paradise .
And in the famous year of 1976 about 4 months of hot warm dry Scorchio weather the reservoirs were at the lowest I have ever seen even to this day .
Still think It's a magical place . Stunning scenery and such a variety of places to walk . I must go back very soon ,to partake again .