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 to be found on a stretch of the canal overlooked by the railway lines. Nearby are some old watercress beds, that were once common along the River Bulbourne and supplied London with watercress. There were about 5 watercress farms round this area of Boxmoor at one time. Over the river is Chaulden Meadow, owned by the Box Moor Trust (owners of the stripey Belted Galloway cattle) and used by the Hemel Hempstead Rugby Club (also known as Camelot RUFC).
You are looking for a 6" camo sherbert tube. Nearby there are lots of canal boats moored and this is a popular walking spot for muggles, so please use extreme stealth. Please return the cache exactly as you found it (er, unless you find it obviously out of place that is!).