From the notes and sketches made by the officers above named the following data may be adduced:--The key of the road from the Utrecht to the Ulundi country is undoubtedly the Inhlazatye mountain, and, although this road runs along a narrow ledge with a precipice on the one side and with huge boulders on the other, interspersed with thorns and bush, yet still it is actually the most direct line of advance upon Ulundi. This Inhlazatye mountain covers a vast extent of country, has an immense quantity of thorn-bush over it, is very broken and steep, but undoubtedly can be turned by an invading force from the north either to the east or to the west, probably the latter, where little bush worth mentioning would have to be passed through. The most commanding and open positions are upon the highlands to the south of the White Umvolosi and Umtatoosi rivers, girdling the new capital, Ulundi. These are the Emtonjaneni hills (which are called Magnibonium on most maps), near the White Umvolosi, and the Tyoe and Entumeni heights in rear of the Umtatoosi, all healthy positions, well watered, and with abundant grass and wood. From the Emtonjaneni hills, explored by Colonel Buller, who estimates them at 200 feet high, the circle of royal kraals on the farther side of the White Umvolosi can be seen; three roads lead to the rear into the colony, the upper, central, and lower. The Ekowe, Entumeni, and Ungoga ranges, from 1500 to 2000 feet above the sea level, dominate the valley of the Umtatoosi. Healthy positions suitable for cavalry encampments may be found on these heights, well wooded and watered, with excellent grass and roads leading to the rear into the colony; and here Marshall's cavalry kept open our communications and effectually severed connexion between the Zulu's right and left impis. These central and coast lines, which are joined by a cross-road, both follow the course of the Umtatoosi.