«We lack – we need – a term for those places where one experiences a ‘transition’ from a known landscape onto John’s ‘far side of the moon’, into Hudson’s ‘new country’, into Berry’s ‘another world’: somewhere we feel and think significantly differently. I have for some time been imagining such transitions as ‘border crossings’. These borders do not correspond to national boundaries, and papers and documents are unrequired at them. Their traverse is generally unbiddable, and no reliable map exists of their routes and outlines. They exist even in familier landscapes: there when you cross a certain watershed, treeline or snowline, or enter rain, storm or mist, or pass from boulder clay onto sand, or chalk onto greenstone. Such moments are rites of passage that reconfigure local geographies, leaving known places outlandish or quickened, revealing continents within counties.»