In Autumn, the tide of bracken on the fells recedes, revealing a scattered Atlantis of forgotten walls, enclosures, and tumbledown buildings from long ago. Over there is a wall built by a landowner to protect his investment in Larch, never realised; here the remains of a small hut, perhaps for a shepherd, caught out at nightfall. In Summer, when the holidaymakers arrive in numbers, and the bracken grows tall, these modest ruins are submerged again. Only the sheep and deer venture into the green shallows. (The bracken is unpleasant against human skin, and besides, is infested with ticks.) I imagine the men who built these walls sleeping out on the fells; their backs stooped, hands toughened by the coarse stones that declare someone else’s ownership. Now these old structures have become sunken reefs, soft with moss, daubed with lichen; alive with birds, insects, delicate lizards. Returning from the stand of pines where I have been taking photographs, I follow a track from a badger sett to where it joins the path that is on the map. The track is strewn with hidden stones from ancient boundary lines. I stumble down the slope to the surface of the world.