The fourth in my occasional series of caches near to ponds, the first three being Normandy Pond, Cutmill and H2olmbury St Mary Pond.
The cache is not at the given co-ordinates of course. To find it you will need to solve a puzzle.
Here is an interesting geographical feature that I discovered whilst browsing around Google Earth.
I did a little research and discovered that it happens to be the fifth in an interesting sequence.
Your first task is to find the sequence. You'll know when you have the correct one, because the fourth and sixth in the list are closely related to each other.
Some people would have you believe that fourth:sixth::seventh:ninth (the fools).
Now find the location of the ninth, and write it in the form:
ab cd.e50 (northing/southing)
pqr st.u50 (easting/westing)
Check: These co-ordinates should be on the ninth. If they are not you've got the wrong one, so continue looking.
The cache is hidden at:
N51 1(d-t).(b+q)a(d+s)
W000 4c.(r-e)r(e+u)
Good luck and please don't put any spoilers in your log.