The Grand Union Canal links Birmingham to London with a waterway which is 145 miles long and contains 166 locks. This cache is one of a series to be found along or close to the Hertfordshire stretch of the canal.
This cache is located at Toovey's Footbridge in Kings Langley. The footbridge got it's name because it provided access across the canal from the town to Toovey's Mill on the East side. The Mill was one of a series of local paper mills that once lined the canal through Kings Langley and provided employment and much canal traffic (2.5 million tons at it's peak!). Toovey's Mill was demolished 25 years ago.