https://www.facebook.com/events/728885680566587/
I was involved with setting up a geocache for Moray Walking festival. Find the geocache and enter the photography competition to win a prize, there is a prize for adults and under 18s, you have until the end of July 2015.
Here are the clues:
Welsh connection. Not a1 but h1
N 57° 29.494 W 003° 11.640
British Grid: NJ 28525 45212
Good Luck!