Ten hectares (25 acres) of grass land have also been destroyed at Abercrave with crews called at 17:21 BST.

BBC: Grass fire threat to overhead wires near Pontycymer

Last week the company said it was looking at the possibility of giving the grass runway at Land's End airport a hard covering, and that a decision would be made "soon".

BBC: Skybus

Plastic matting is to be installed over the grass surface of the Land's End runway to allow flights to resume between the Isles of Scilly.

BBC: Plastic mats to strengthen Land's End runway

After finding a plot of virgin prairie grass on his father's land, Mr Block began to build.

ECONOMIST: Building houses

"It used to be very hard to find enough grazing land here in Greenland because grass just didn't grow here, " Frederiksen said while inspecting the new lambs.

CNN: Farming to the fore as Greenland ice thaws

The softening of the soil and the consequent release of nutrients is likely to encourage the growth of shrubs on land that is now dominated by grass, moss and lichens.

ECONOMIST: Global warming and the permafrost

The manufacturers say it will be able to land on short, unpaved runways or soft grass fields.

BBC: A400M: Military workhorse

Land's End Airport is closed until Thursday because of a waterlogged grass runway, preventing Skybus flights.

BBC: Skybus