The boys did not go on the hunt for the Aldreth causeway one because that would have added 3 miles, possibly ending in really tired 7-9 year olds.
http://coord.info/GC2K9F2
http://coord.info/GC2ABCZ
http://coord.info/GC2ZK8W
http://coord.info/GC2K2WQ
http://coord.info/GC1XZFY
http://coord.info/GC2YPKJ (Lucas cache - this one is nearby and we found it the day before) I repaired it, and I see that someone has moved it to hide it from the muggles a bit better.
This was a lot of fun, and proves once again, that I am rubbish at clues, only slightly better at mapping co-ordinate conversions (I need to find an app for that). But had so much fun I am going to head out again very soon.
A way to get the kids out of doors that is definitely recommended, and something you can pursue all year around.
