There are two geocaches located in step in stone venues, see http://www.geocaching.com for more information. Look for SEED or PAVIMENTUM. Alternatively, these are the geocache coordinates:
PAVIMENTUM (Westdown): N 51° 12.273 W 002° 25.178
SEED (Halecombe): N 51° 13.368 W 002° 26.011
Nick Weaver 6/9/15