This cache is part of the Hastings Hill Hike series, a trail round the various hills and glens of Hastings Country Park. In this series there is quite a few unique uses of common container types.
This cache container is a nano pop top
The trail is quite long and can get quite tricky, with bridleways and wild ponies, at some points so remember to take care (no caches stray off the path towards the cliff edge)