I would possibly have walked straight past this stone, just taking it for another lump of granite. Ocifant had other ideas... and after a bit of examining we decided that it quite possibly was a fallen menhir.
Looking into the field there is what looks like three or four more stones lying in a row going south... towards the Leaze stone circle. A good Bodmin Moor wind, barbed wire... and Ocifants fear of long horned tatty cattle meant we did not explore further.
If the row does run towards the circle it is the first of its kind on Bodmin Moor, although many of the Dartmoor rows end in a circle or a cairn. There might even be a cairn at the northern end (a mound beside the fallen stone is about the right size and is made up of rocks).
After a stroll with Mr Hamhead (Mark) across Bodmin to see King Arthur's Hall, just a short way east from the King Arthur's Down circle (following the field wall), we came across this fallen menhir.
The stone is almost certainly fallen, as the shape is ideal for a 'stander', and the base is thicker and shaped for support, being much thicker in width as well as breadth.
Mark shoved his trusty walking pole under the thin end, and ascertained that the stone is no more than about 9 inches thick at the pointy end.
There is a possibility that this is part of a fallen stone row, as at least two more large granite blocks were seen directly in line with this one on the other side of the wall. Barbed wire and long-horn cattle prevented closer inspection of these other stones.
As it lays, the stone is pointing directly to Rough Tor.