For one of the most typical features, the clapper-bridges, we cannot claim the greatest antiquity, as the surviving specimens are on the pack-horse routes, and not on the moor's more ancient trackways. There was one at Two Bridges, but it has gone; and, still nearer to Princetown, there is one over the Ockery, a rugged structure of unwrought boulders, to which later parapets have been added. The true Dartmoor bridge has no parapet. One of the finest is at Postbridge, in the very heart of the moor; there are others at Teign Head and Dartmeet. In these bridges the huge "clappers" or blocks of granite lie absolutely unmorticed. Two of the horizontal blocks at Postbridge are about fifteen feet in length. At Scaur Hill there is a bridge of a single massive boulder. Though essentially characteristic of Dartmoor, there are similar bridges elsewhere, as at Torr Steps over the Exmoor Barle, and in the Peak district. Another special interest attaches to Postbridge: it is here that the ghostly and indistinct Lych Way starts on its route to Lydford church. By this track in old days burial parties carried their dead to Lydford, which is still the parish church of a larger section of the moorland. Before the year 1260 Lydford had to be resorted to for all religious purposes; from that date permission was given to inhabitants of the eastern moors to use the church of Widecombe. In days before education had done something to kill picturesque imaginings, it is not surprising that many a phantom cortege was supposed to wend its way along this haunted track; and the moor folk were very careful not to pass that way alone at night-time. But the ghosts have been laid now, or men's eyes are sealed by their incredulity; the only night-haunters of Dartmoor are mist, and rain, and storm. In making a tour of the border villages it is natural to begin with Lydford, the mother-parish, which, with an extent of 56,333 acres, claims to be the largest parish in England. Lydford boasts of importance even as far back as the Roman invasion, but this is very dubious; there is no sign of anything Roman either at Lydford or on the moorland. The town was burnt by the Danes in 997, when they also destroyed Tavistock Abbey. It is certain that Lydford ranked high among the Stannary towns, and was a place of consequence. Its castle, dating from soon after the Conquest, is by no means imposing in its present appearance, but as a Stannary prison it had a terrible reputation. The summary justice executed by the mining and forest authorities gave rise to the term "Lydford law", which was something worse than what we now understand as lynch law. Browne, the Tavistock poet, says: "I oft have heard of Lydford law, How in the morn they hang and draw, And sit in judgment after"; but it is said that even this swift treatment was better than being cast into Lydford prison. [Illustration: CLAPPER BRIDGE, POSTBRIDGE (_Page 22_)]