I have to agree with ZigZag Hill! Its fantastic! And i've even killed a gearbox on a car once going up it last year. Not a Mini obvously! Also the only place you can breakdown and see cars coming down the hill handbraking it around each and every hairpin corner. Pretty scary to be in the wood section with cars racing up and down the hill.
Shame Snakes Pass going between Manchester and Shefield isnt on there