Near that place De Vargas was on the watch, a thick and lofty cloud of dust revealing to him the position of the Moors. A half-league of hills and declivities separated the van and the rear of the raiding column, a long, dense forest rising between. De Vargas saw that they were in no position to aid each other quickly, and that something might come of a sudden and sharp attack. Selecting the best fifty of his small force, he made a circuit towards a place which he knew to be suitable for ambush. Here a narrow glen opened into a defile with high, steep sides. It was the only route open to the Moors, and he proposed to let the vanguard and the herds pass and fall upon the rear. The Moors, however, were on the alert. While the Spaniards lay hidden, six mounted scouts entered the defile and rode into the mouth of the glen, keenly looking to right and left for a concealed enemy. They came so near that a minute or two more must reveal to them the ambush. "Let us kill these men and retreat to Gibraltar," said one of the Spaniards; "the infidels are far too many for us." "I have come for larger game than this," answered De Vargas, "and, by the aid of God and Santiago, I will not go back without making my mark. I know these Moors, and will show you how they stand a sudden charge." The scouts were riding deeper into the glen. The ambush could no longer be concealed. At a quick order from De Vargas ten horsemen rushed so suddenly upon them that four of their number were in an instant hurled to the ground. The other two wheeled and rode back at full speed, hotly pursued by the ten men. Their dashing pace soon brought them in sight of the vanguard of the Moors, from which about eighty horsemen rode out to the aid of their friends. The Spaniards turned and clattered back, with this force in sharp pursuit. In a minute or two both parties came at a furious rush into the glen. This was what De Vargas had foreseen. Bidding his trumpeter to sound, he dashed from his concealment at the head of his men, drawn up in close array. They were upon the Moors almost before they were seen, their weapons making havoc in the disordered ranks. The skirmish was short and sharp. The Moors, taken by surprise, and thrown into confusion, fell rapidly, their ranks being soon so thinned that scarce half of them turned in the retreat. "After them!" cried De Vargas. "We will have a brush with the vanguard before the rear can come up." Onward after the flying Moors rode the gallant fifty, coming with such force and fury on the advance-guard that many were overturned in the first shock. Those behind held their own with some firmness, but their leaders, the alcaides of Marabella and Casares, being slain, the line gave way and fled towards the rear-guard, passing through the droves of cattle, which they threw into utter confusion.