At Pollaneyster in County Galway, what the Ordnance Survey recorded on its 1930 six-inch map as a hachured feature, marked more explicitly as "Quarry" on the larger twenty-five-inch plan, had by 1984 reduced itself to little more than a very shallow, irregular depression in the ground. The hachures on an OS map, short radiating lines used to suggest the sloping edges of a pit or cutting, would once have implied something with definite form and purpose. Whatever that purpose was, the landscape had largely reclaimed it within a few decades of being mapped.