One of the finest of the French examples of this class of monuments is that near Saumur, at Bagneux. The walls are composed of only four stones on one side and three on the other, yet it measures 57 feet 6 inches by 14 feet 4 inches across. Another, near Essé, is even larger, though not so regular in plan, nor so grand in the character of the stones. It measures, however, 61 feet by 12 feet at the entrance, increasing to 14 feet over all at the inner end. There is a third at Mettray, near Tours, which, though very much smaller, is curiously characteristic of the form. The immense mass in the centre (woodcut No. 125) and the two smaller which form the roof almost take from it the character of rude-stone architecture. There is a fourth, of a less megalithic character, at Locmariaker,[404] and several others are dispersed over Brittany. It is not possible to know whether the intention may not have been that these, like all smaller chambers, should have been buried in tumuli. These just quoted, however, certainly never were so, but this may have arisen from their having been left unfinished. That at Bagneux, however, could hardly have supported a heavy mass without falling in, and that at Mettray looks too like a finished monument for any one to fancy its builders wished it hid. [Illustration: 125. Dolmen near Mettray. From Gailhabaud.] [Illustration: 126. Dolmen of Krukenho.] The more usual form of French dolmens is either square or slightly in excess of that form, seldom reaching two squares in plan, and with a height equal to its breadth. One of the finest specimens[405] of a monument of this class is in the middle of the village of Krukenho, halfway between Carnac and Erdeven, and is now used as a cart-shed or barn. It certainly never was covered up, though its entrance may have been closed; indeed, the stones used for that purpose still lie in front of it. From this, which may be styled a first-class dolmen of the ordinary type, down to the simple dolmen of four stones, like Kit's Cotty house, every possible variety and gradation are to be found in France; but, so far as I know, no classification has been hit upon which would enable us to say which are the oldest or which the more modern.