A 7.5 mile walk starting from Princes Risborough, across the Horsenden fields to visit the Lyde Garden in Bledlow. Joining the Midshires Way we climb through woodland up to Chinnor Hill Nature Reserve and join the Deep Time Walk, created by the Hedgerley Wood Trust. We descend Crowell Hill to reach the Chinnor chalk pit lakes then board the steam train back to Risborough.