In the mountains resided a cacique already mentioned named Ponca, a rival and adversary of Careta, who wished the Spaniards to join with him in an invasion of his territory. There was no immediate necessity for the Spaniards to make war upon Cacique Ponca, as he had not offended them in any particular, nor were they in need of a further extension of territory, since the valley they had occupied, situated between the sierras and the cordillera of the Andes, was extremely fertile and capable of sustaining a great number of inhabitants. It was not only excellent for planting, with rich soil and abundant natural resources, which came early to perfection beneath the ardent sun of the tropics, but abounded in game, while its rivers and the bordering gulf teemed with fish in great variety. But the Spaniards were less inclined to agriculture than to war, and would rather ravage their neighbors' territory for gold than extract from the fertile soil the products it so generously yielded to the cultivator. Had they been less covetous and restless, less avaricious and rapacious, they might have avoided contact with the ferocious tribes of the interior, and perhaps have prospered. There was, however, an unseen force at work constantly against them which they could not successfully combat. This was the climate, which made terrible inroads upon the health and constitutions of the Spaniards, by the great heat and humidity of the air, and the heavy, almost incessant rains, which came down at times as plunging torrents. Nothing less than the most unquenchable ardor and the most marvellous resolution, says the historian, could support the Spaniards under so many discouragements and overcome so many difficulties. Perhaps it was because they possessed this ardor in an excessive degree that they continually panted for fresh conquests and desired to come into conflict with the savages. Their great incentive, as already remarked, was the acquisition of gold, and, learning that Cacique Ponca possessed the precious metal in abundance, they were easily induced to join with Careta in an attack upon him. Taking his troops by sea to the point nearest to Ponca's capital, Balboa marched rapidly upon the village, which, finding it deserted, he sacked and burned. He obtained considerable booty, to which his ally, Careta, laid no claim, being content with having humbled his adversary and driven him still farther into the mountains, whence Ponca sent messengers imploring a cessation of hostilities.