The soil and stones are coming from a tunnel somewhere ... nothing carries that amount of soil and stone and deposits it somewhere else ... poke about ... there is a tunnel somewhere behind that soil ... beneath the edging to that border?
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
The soil was removed and, yet again, no hole or tunnel was apparent: the ground appeared solid, but poking a thin stick against the edging has located a hole, about 4 inches deep and approximately 2 inches in diameter. Photos have been taken and will be posted.
Previously, an area of shale closest to the edging had been removed and the anti-weed matting beneath it was intact. We were totally baffled, as it is illogical that this amount of soil and stones could just be deposited out of thin air, showing no source.
It seems odd that the mole ( there now seems no doubt that it is responsible) should continue throwing up a new mound when the surface of the ground had not been disturbed. What, if anything, should we do next? We had two mole catchers in our village a few years ago, but we have lost touch with them both. If the mound is confined to that area of lawn only, we are inclined to do nothing.
Mole tunnels depths vary depending on where the worms and other critters which mole eat are living. In dry soil they go deeper. In damp soils they're just below the surface.
Your soil looks dry hence the depth. Tunnel digging displaces earth and the moles shunt it up thru the kind of hole you have no found. Clearing the mound thoroughly will expose the hole and the mole will come back to block it again as they don't like draughts.
Vendée - 20kms from Atlantic coast.
"The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
It seems odd that the mole ( there now seems no doubt that it is responsible) should continue throwing up a new mound when the surface of the ground had not been disturbed. What, if anything, should we do next? We had two mole catchers in our village a few years ago, but we have lost touch with them both. If the mound is confined to that area of lawn only, we are inclined to do nothing.
Your soil looks dry hence the depth. Tunnel digging displaces earth and the moles shunt it up thru the kind of hole you have no found. Clearing the mound thoroughly will expose the hole and the mole will come back to block it again as they don't like draughts.