The DruidsStapleWood (DSW) series is a circular route of 69 caches set over a distance of 24m/15 miles.
Full details can be found on the main log page at GC5PQR4 # 01 – DSW – Lych Gate http://coord.info/GC5PQR4&
You are looking for a typical type container to finish this series off with.....35mm film pot!