The Milton Keynes Boundary Walk is a circular walk approximately 65 miles long around the boundary of the Milton Keynes Unitary Authority; it is waymarked with the Oakleaf symbol.

In 2012 a group a local geocachers divided the walk into sections and set a series of over 300 caches along the boundary.

More information about the walk and caches can be found at the website Caching the Boundary.

The Golden Bonus can only be found when you have completed the bonus cache from each other section.

You must collect 10 bonus letters from the 10 coloured section bonus caches.

Please note it is a condition of logging this cache that you must first log a find on ALL 10 of the coloured section bonuses below. No sponging the coordinates or bonus codes of your mates please.

Here's a handy table for you to write down the codes you found.

When you have found all 10 caches, make a character string using the 10 letters in the colour order shown above - call this string MYANSWER

Then send an email to MYANSWER@the-gardners.co.uk - If you have the right codes you will receive an auto-respond email containing the correct final coordinates for this cache.

Be very wary though - to prevent brute force attacks, an invalid address will be met with denial message and then the domain will refuse to reply to you again for 24 hours. If you have found all ten codes and make a typing error ( or have lost any of your bonus codes ) please mail us through GC.com.