As Tiompan knows, this one is in a fairly dodgy situation. I spoke to the farmer about it, and he has agreed to ensure that no further risk will occur to the stone from its current situation.
Sorry if this sounds a bit mysterious, but the stone could be regarded as ‘portable’ and we don’t want it to disappear.
Unless, of course, the risk continues and we’re forced to take it into “protective custody”!
The site has been reported to the local museum, but nothing much seems to have been done.