This one was set by my 8-year old, she'll be very pleased with your comment, thanks.
Toyahmunky, there is also a series of 10 along the 5 mile Calne to Chippenham cycleway, depending how far you want to go.
I work in Chippenham and I have walked over that bridge every day for the past week trying to have 'a go' from a distance......far to many muggles for a lunchtime cache!!! It looks like an awesome challenge and I've seen a lot of comments full of praise for it