This cache is the bonus for the Stourbridge Canal Stroll Adventure Labcache.series - obviously this cache is not in the canal.
To log this cache you need to have signed the log and to find it you need to have worked out the coordinates for the final location to the Stourbridge Canal Stroll Adventure Lab.
If completed as a walk/bike ride in one helping, you will have covered around 4km depending on diversions etc.
The final location is close to the Lock 16 end of the walk - Unfortunately proximity rules limited my choice of locations along the canal.
The labs will give you 5 numbers: A-E. Use the following equation to derive the final location.
N 52 28.(E-B) (B-A-A) (A-2) W002 0(C+B).(A*3) (B/A) (D/B)