The left flank mentioned above consists mainly of that eastern razor-backed kopje already referred to, which runs northward for a distance of some 1,200 yards, its crest line broken by a series of small knolls. Further north on this flank are one or two smaller kopjes, then a mile of valley, on the far side of which, nestling under another cluster of hills, lie the Rooilaagte homestead and a Kaffir kraal. On the right flank in like manner the western razor-back is similarly continued in a northerly direction by two other small kopjes, the more northern of which is situated on the west side of the railway. A Nek of land connects this kopje with the apex of a triangular patch of broken ground, stretching several miles northward, with its eastern side at right angles to the railway. Yet further north, beyond the base or northern side of this third cluster of hills, a valley some two miles broad runs from the railway on the east to the open veld on the west, and thus completely separates the quadrilateral redoubt, the Rooilaagte, and the triangular clusters of hills already described, from a fourth group termed Honey Nest Kloof Kopjes, which stretch northward to the Modder valley.[160] Strong, therefore, although this whole position, or rather series of positions, was on the front and flanks, it will be understood that if the valley in rear could be seized by a sufficient mounted force, while the front and flanks were threatened by infantry and guns, the defenders would be cut off from their line of retreat, and their safety seriously imperilled. [Footnote 160: Only the southern groups of kopjes are shown on map No. 11.] [Sidenote: 23rd & 24th Nov. Preparation for advance.] On the afternoon and night of 23rd of November Lord Methuen's division rested at Belmont. The forenoon of the 24th of November was spent in preparing for another march, supplies of ammunition being replenished by railway from Orange River station. Meanwhile an armoured train, escorted by the mounted company of the Loyal North Lancashire, had been despatched up the line to reconnoitre, and came under artillery fire from the Boers on Graspan. Its escort pushed on, the foremost scouts riding up to within fifty yards of the kopjes, and ascertaining, although with the loss of an officer (Lieutenant Owen-Lewis, I.S.C.) and two men, that these hills were held by a Boer force of about 400 to 500 men, with two guns. The mounted infantry, together with the train, then returned to Belmont. [Sidenote: Forward to Swinkpan. Nov. 24th.]