Eleven miles north of Belmont station the road and railway leading to Kimberley enter a network of kopjes, which dominate the line until the plain through which the Modder river flows is reached. These rough outcrops of rock and boulders from the plains of the open veld have been arranged by nature in clusters of small hills, the most southern group being so shaped as to form a natural redoubt astride of the railway, midway between Graspan and Enslin, thus barring any advance from the south along the line. The larger portion of the Boer force, defeated at Belmont, had fallen back under Prinsloo, on the 23rd of November, across the Free State border to Ramdam, about 13 miles east of Enslin station. De la Rey, however, whose commando had taken but little part in that action, halted his men at Graspan, and occupied the excellent position which this redoubt offered for a further stand. That same evening the Transvaal General sent an urgent despatch to his Free State colleague, imploring him to return to the railway line, and in compliance with this request Prinsloo on the following day left Commandant T. van der Merwe with 800 men at Ramdam, and moved to Graspan with the rest of his men. On the arrival of the Free State commandos at Graspan, a Krijgsraad assembled, and decided to remain on the defensive for the next twenty-four hours, after which period, if no forward move were made by the British troops, the two republican leaders would themselves assume the offensive. [Sidenote: Character of position.] The natural redoubt, which the Boer leaders had thus determined to hold, rises abruptly from the level, and commands the approaches across the veld on the south, east and west; the even surface of the plain, the sandy soil of which was barely concealed by dry tufts of coarse grass, presented not an inch of cover, save for a few ant-mounds dotted about here and there: their hard sun-baked walls afford good protection from bullets for a skirmisher lying close behind them. The kopjes are so grouped as to facilitate the reinforcement of either the front face or the flanks from a centrally placed body. They overlook, moreover, the only water available in the vicinity, a few muddy pans and wells within the hills to the rear. The southern face of the stronghold, tracing it from west to east, has a length of about a mile. The flanks of this face are very definitely marked by two razor-backed kopjes, the one on the east and the other on the west, rising some 150 feet above the surrounding ground; both these kopjes run approximately from the south to the north. In the centre of the southern face lies a third kopje, oval in shape, 200 yards in length and 30 feet higher than the flank hillocks with which it is connected by re-entrant ridges. [Sidenote: Its one weakness.]