The Spaniards were under the command of the Adelantado ("military governor") Alonso Fernández de Lugo, who had sold his properties in order to finance his conquest of Tenerife.Bencomo, the ruler of Taoro, refused Fernández de Lugo's terms, and instead began to form his own alliance against the Castilians, composed of the menceyatos of Tacoronte, Tegueste, Daute, and Icode.The Castilians committed the terrible blunder of walking blindly into the ravine now called Barranco de San Antonio (Farfan was its Guanche name), in Acentejo.Despite their technological superiority — the Spaniards, protected with armour and shields, fought with blunderbusses and cannon — the Guanches, fighting naked, attacked them from the slopes with stones and spears of hardened wood (known as banotes).The Spaniards were unable to maneuver with their horses, because these slopes were covered with very thick, arboreal brush, and the Guanches, who numbered some 3,300 men under the leadership of Bencomo and his half-brother Tinguaro, chief of the comarca of Acentejo, made use of their mobility and intimate knowledge of the terrain to gain the upper hand.