At first the burial of these people was in dolmens, like the fine specimen at Drewsteignton; later, cremation became the fashion, and the smaller kistvaen, or stone chest, was used. The kistvaen was covered by cairns or heaps of stones, probably placed there in tribute to the dead: there are many relics of such on the moors, as in Cornwall, but they have usually been scattered or mutilated, and the contents rifled by seekers after buried treasure. The stone-circles on the moor are, of course, entirely dwarfed by Stonehenge, but when the problem of the greater is solved we shall know that of the lesser; at present we can only conjecture. The Scaur Hill circle on Gidleigh Common is a good specimen, being about ninety-two feet in diameter; near it are several stone-rows or alignments. Dartmoor is famous for these lines of standing-stones, which are generally connected with places of burial; the longest, on Staldon, starting from a circle, runs for over two miles. These, together with the single stones or menhirs, were probably intended as memorials of persons or events, and may also have been used as places of gathering; but their religious significance, if any, can have been little more than a primitive ancestor-worship. At a later period the menhirs were often converted into crosses, and as such they are common in Devon and Cornwall. Other tokens of the early inhabitants are to be found in the signs of tin-working, but here we have to be careful in assigning dates; much tin-mining was done in the Middle Ages, and it is not always easy to distinguish between traces that date from many years before Christ and those that belong only to the fourteenth or the fifteenth century. The advance in methods of working and in mode of living was very slight, and it is quite possible to confuse a rude hut of the medieval tinners with one of prehistoric origin. We cannot positively state what period of the Bronze Age saw the dawn of tin-working on Dartmoor, but their place in the oldest folklore gives the "tinkards" a great antiquity. The metal was streamed, or washed from the beds of the moorland rivers, cast in rough ingots, and carried on pack horses to the Stannary or mintage towns, where it was stamped and taxed. Parts of the old trackways still remain, often paved; and it was for the use of the pack-horses that the characteristic clapper-bridges were constructed, like those of Dartmeet, Postbridge, and elsewhere. These bridges are quite modern when we compare them with the stone-circles and kistvaens. There was a kind of guild or early trade union between the miners of Devon and Cornwall, reminiscent of the time when both belonged to "West Wales"; and a relic of the old jurisdiction is the Stannary Court still meeting at Truro.