Aston Clinton, a village near Tring, has a 'gravity hill' where an optical illusion makes it feel like your bike is freewheeling uphill. | map
These pictures accompany chapter 25 of the cycling guidebook 50 Quirky Bike Rides in England and Wales (Rob Ainsley, Eye Books 2008).
For more information about the images, or to get hold of high-resolution versions, contact us.
To find out how to enjoy this unique cycling experience, buy the book!
Left, top to bottom: 'Freewheeling uphill' on Dancersend Lane; sign for nearby Wendover Woods; Wendover