This monolith stands at about the highest point to the south-west of Wadebridge in Cornwall. It was re-erected in 1956 and placed in State Guardianship in 1965 when it was provided with an MPBW sign (now replaced). Note that the original name was longstone rather than monolith.
Note that the stone is now dated from the Late Neolithic to the mid-Bronze Age, i.e. c. 2500–1500 BC; this contrasts with the view in the 1960s as used on the sign, 1800–600 BC.
The site is now managed by the Cornwall Heritage Trust.
Castlerigg stone circle in Cumbria was placed in state guardianship by General Pitt-Rivers in 1883 along with a number of other prehistoric monuments (e.g. King Arthur’s Round Table; Mayburgh Henge; Nine Ladies in Derbyshire). This decision came in the wake of the Ancient Monuments Act (1882).