The circumference wall measures over 1500 feet, and was not for defence against human foes, but served as a protection against wolves. Grimslake, a small stream that dries up only in very hot summers, flows through the enclosure at its northern extremity. It passes under the wall, percolates through it for some way, and then emerges three-quarters of the way down. The pound was constructed where it is for two reasons: one, to take advantage of the outcrop of granite that divides the waterways, and which was largely exploited for the construction of the enclosure wall and of the huts within; and the other, so as to have the advantage of the stream flowing through the pound. The entrance is to the south-south-east, and is paved in steps. There are twenty-one huts within the pound; most of these have been explored, and have revealed cooking-holes, beds of stone, and in some a flat stone in the centre, apparently for the support of the central pole sustaining the roof. Flints and rare potsherds have been recovered. The most perfect of the huts has been railed round, and not filled in after clearing, that visitors may obtain some idea of these structures in their original condition. This one has a sort of vestibule walled against the prevailing wind. On the hill-top above Grimspound, a little distance from the source of Grimslake, is a cairn surrounded by a ring of stones; it contains a kistvaen in the centre. On the hill opposite, the _col_ between Birch Tor and Challacombe Common is a collection of stone rows leading to a menhir. By ascending Hameldon, and walking along the ridge due south, the Great Central Trackway is crossed, in very good condition, and a cross stands beyond it. On the left-hand side of the road under Shapley Tor, above a little hollow and stream, before reaching the main road from Tavistock to Moreton, may be seen a remarkably fine hut circle composed of very large slabs of stone. On Watern Hill, at the back of the "Warren Inn," or to be more exact, on that portion called Chagford Common, are two double rows of upright stones leading from a cairn and small menhir. The stones are small, but the rows are very perfect.