But the interest of this particular spot is not concerned with them at all; it is centred upon the modest homestead itself. The mud walls have responded in an amazing fashion to the call of the year. Not content with a background of lichen and moss, they have flung out lengthy streamers of fern, from amidst which peer shyly the blossoms of various plants. Obedient to the impulse of spring, each of the four sides has garbed itself thus. In less exuberant parts the effect would be strained for with toil and achieved with triumph. But here the black inhabitants regard their eloquent house as a matter of course. Just after leaving the small station of Bañada de Rocha is a tunnel. This fact may appear totally unworthy of mention--anywhere else but within the countries bordering on the River Plate. Here a tunnel is an object to be paused at, and to be inspected with not a little curiosity. Although it is possible that some minor burrowings may exist, to the best of my belief the three republics of Argentina, Uruguay, and Paraguay can count no more than two regular tunnels between them. The wonderful shaft bored through the heart of the Andes is one--the other is before us here at Bañada de Rocha. As the only specimen of its kind in Uruguay, therefore, it is not without distinction, and is worthy of at least a passing remark. After passing through the tunnel the line drops down into a fairly wide plain, hemmed in by numerous low ranges of the inevitable flat-topped hills, while a few elevations of the same curious nature dot the country in the nearer neighbourhood of the track. In a short while, however, the more broken country has surged up all about once again, bearing upon its surface quaint rocky projections, some shaped exactly as tables, others in the form of sugar-loaves, while yet others resemble giant mushrooms sprouting cumbrously from the soil. Ere reaching the station of Paso del Cerro a great grove of carolina-trees rises majestically, and in the grateful shadow of the branches a long line of bullock-wagons, each vehicle loaded with the wool for which the region is noted, goes winding its way towards the station in the stolid fashion of such processions. Paso del Cerro is delightfully situated, facing as it does a range of hills whose surface is dotted with ranches that appear picturesque enough in the distance. Beyond this point lofty cliffs of rock soar aloft, pressing near to the line. In the nooks and crannies of the great walls are dwarf trees of fantastic shapes that make pleasant breaks here and there in the bare rock of the surface.