The unsolved mystery of the idol and temple continued to vex the Spaniards for many a year. When an indomitable soldier like Vasco Nuñez de Balboa found himself frustrated in the search for them, few others had the courage to take it up. It was not like Balboa to retire and acknowledge himself defeated, and it was much against his will that he turned his back upon the unseen Dobaybe and set his face towards Darien again. He did not, however, abandon the project utterly, and gave a pledge that he would sometime return, by leaving behind a body of thirty soldiers, under command of Bartolomé Hurtado, who were to hold the country in subjection. They took possession of a deserted village on the Rio Negro, and, while Balboa with the main body descended the river to Darien, ranged through the country in pursuit of fugitives. From what afterwards transpired, it would seem that Cacique Zemaco had been playing a game of deep duplicity with his more civilized opponent, and, whether he held possession of the golden Dobaybe or not, had some sort of a stronghold in the mountains to which he could retreat on occasion, and which Balboa had not been able to reach. As soon as the latter's back was turned, he descended from his stronghold, and spread his warriors along the rivers, retaking the deserted villages and collecting their inhabitants together. When Hurtado and his little band were left alone in the wilderness, Zemaco perceived an opportunity for revenge upon the Spaniards; but he was cautious and had a wholesome fear of their weapons. He waited until Hurtado had detached more than half his total force, for the purpose of taking their prisoners to Darien, and then launched his bolts of war. Hurtado's captives were placed in a large boat guarded by fifteen or twenty Spaniards, most of whom were invalided through wounds or sickness, and thus scarcely ten sound men remained behind in the Indian country. The boat descended the Rio Negro very slowly, for it was heavily laden with its human freightage, and late one afternoon, when between forest-covered banks that closely approached and cast a gloom upon the waters, it was attacked by Zemaco and his warriors. They were in four canoes, and were armed with war-clubs and lances. Shouting their war-cries, they surrounded the boat containing the Spaniards, and with the assistance of the prisoners massacred all save two. These two escaped by leaping into the river and clinging to the trunk of a great tree which was floating with the current. They hid themselves in the branches, and, being over-looked by the Indians, finally reached the shore and returned to Hurtado with their tidings of disaster. The commander was so disheartened that he at once abandoned his post on the Rio Negro and hastened to Darien with all speed. It is surprising that Zemaco did not attack him when on the way, as he had an overwhelming force, and his recent victory had inspired him with confidence; but as