The road goes parallel to and above the line where the sharp spring of the hill leaves the floor of the valley; it commands a sufficient view of what is below and of what lies before; it is well on the chalk, just too high to interfere with cultivation, at least with the cultivation of those lower levels to which the Middle Ages confined themselves; it is well dried by an exposure only a little west of south; it is well drained by the slope and by the porous soil; it is uninterrupted by combes, or any jutting promontories, for the range of the hills is here exactly even. In a word, it here possesses every character which may be regarded as normal to the original trail from the west of England to the Straits of Dover. The villages which lie immediately below it are all at much the same distance--from a quarter to half a mile: it can be said to traverse one alone--Detling, and this it passes through to the north. The others, Harrietsham, Hollingbourne, Lenham, Charing, are left just to the south. They are now connected by the high-road which joins up the valley, and were once, it may be presumed, isolated from each other by the common fields and the waste of each village, or if connected, connected only by paths. They may have depended, during many centuries, for their intercommunication, upon the Old Road, to which each of them possesses a definitely marked line of approach: and the Old Road remains the typical main artery, which passes near, but not through, the places it serves.[38] This thirteen miles of the way is often vague, and is indeed actually broken at one point between Cobham Farm and Hart Hill, a mile and a half east of Charing; but it is a gap which presents no difficulty. The alignment is precisely the same before and after it; it is but seven furlongs in extent; it has been caused by the comparatively recent ploughing of this land during the two generations of our history when food was dear. From Boxley to Lenham the plain beneath the Old Road is drained by a stream called the Len, tributary to the Medway. Just before or at Lenham is the watershed: a parting of no moment, not a ridge, hardly observable to one standing above it on the hillside. It is the dividing line between the basins of the Medway and the Stour. All the hydrography of south-eastern England presents this peculiarity. The watersheds are low; the bold ranges do not divide the river-basins, because the water system is geologically older than the Chalk Hills. The Stour rises in Lenham itself, but its course has at first no effect upon the landscape, so even is the plain below. A village, which preserves the great Norman name of the Malherbes, stands on the watershed: the whole flat saddle is a rich field diversified by nothing more than slight rolls of land, in between which the spring comes as though up from a warmer earth, long before it touches the hills.