These stones were set up around the Forest of Dean to mark enclosures.
This is the enclosure stone marking “Mitcheldean Meend Enclosure No. 1” set up in 1847.
A.R.P is the area covered: A(cres), R(oods) and P(oles) i.e. 9.5 acres, 0 roods and 0 poles.
Lord Morpeth was the Crown Commissioner of the Woods
See also:
Forest of Dean Enclosures