In time everything is consumed by the land. Even gritstone. Lichen forms a base layer on which mosses can grow. Moss traps soil, debris, waste, grasses form and then a heather seed lands, brought by the wind or a bird, perhaps a nocturnal animal foraging for food.
The western side of No.1 is almost free of lichen and moss, whilst the eastern edge that slopes down to ground level is gradually being colonised by the moor. The prevailing wind in this area is from the west, the gritstone bowl protected to a degree by the slopes of the clough and the higher ground to the east.
In time if left alone the No.1 will be lost, enveloped by nature as it inches west along the boulder.