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/Buckinghamshire stretch of the canal.
This cache is up by Bushes Lock on the Northchurch stretch of the canal. When I placed this cache, there were muggles everywhere, so you will have to take care when attempting to find and retrieve the cache because your greatest problem will be avoiding them!