The Secret Places of the Heart (1922) by H G Wells

Wonderful indeed it is, a vast circumvallation that was already two thousand years old before the dawn of British history; a great wall of earth with its ditch most strangely on its inner and not on its outer side; and within this enclosure gigantic survivors of the great circles of unhewn stone that, even as late as Tudor days, were almost complete. A whole village, a church, a pretty manor house have been built, for the most part, out of the ancient megaliths; the great wall is sufficient to embrace them all with their gardens and paddocks; four cross-roads meet at the village centre. There are drawings of Avebury before these things arose there, when it was a lonely wonder on the plain, but for the most part the destruction was already done before the Mayflower sailed. To the southward stands the cone of Silbury Hill; its shadow creeps up and down the intervening meadows as the seasons change. Around this lonely place rise the Downs, now bare sheep pastures, in broad undulations, with a wart-like barrow here and there, and from it radiate, creeping up to gain and hold the crests of the hills, the abandoned trackways of that forgotten world. These trackways, these green roads of England, these roads already disused when the Romans made their highway past Silbury Hill to Bath, can still be traced for scores of miles through the land, running to Salisbury and the English Channel, eastward to the crossing at the Straits and westward to Wales, to ferries over the Severn, and southwestward into Devon and Cornwall.