If you look west you will see the remains of Little Cressingham wind mill. Little Cressingham Mill is on a Domesday site, as two mills were listed in the parish at that time. Little Cressingham mill was rebuilt in 1821 and despite its dual power source, this was only a small mill.
You will also see a modern use for wind power, a wind turbine.
Wind power first appeared in Europe during the Middle ages. The first historical records of their use in England date to the 11th or 12th centuries.
You are looking for a very small cache.