Believing himself now on Red River, within the then assumed limits of the United States, he built a small fortification for his company, until the opening of the spring of 1807 should enable him to continue his descent to Natchitoches. As he was really within Mexican territory, and only about eighty miles from the northern settlements, his position was soon discovered, and a force sent to take him to Santa Fe, which by treachery was effected without opposition. The Spanish officer assured him that the governor, learning that he had mistaken his way, had sent animals and an escort to convey his men and baggage to a navigable point on Red River (Rio Colorado), and that His Excellency desired very much to see him at Santa Fe, which might be taken on their way.
As soon, however, as the governor had the too confiding captain in his power, he sent him with his men to the commandant general at Chihuahua, where most of his papers were seized, and he and his party were sent under an escort, via San Antonio de Bexar, to the United States.
Many citizens of the remote Eastern States, who were contemporary with Pike, declared that his expedition was in some way connected with the treasonable attempt of Aaron Burr. The idea is simply preposterous; Pike's whole line of conduct shows him to have been of the most patriotic character; never would he for a moment have countenanced a proposition from Aaron Burr!
After Captain Pike's report had been published to the world, the adventurers who were inspired by its glowing description of the country he had been so far to explore were destined to experience trials and disappointments of which they had formed no conception.
Among them was a certain Captain Sublette, a famous old trapper in the era of the great fur companies, and with him a Captain Smith, who, although veteran pioneers of the Rocky Mountains, were mere novices in the many complications of the Trail; but having been in the fastnesses of the great divide of the continent, they thought that when they got down on the plains they could go anywhere. They started with twenty wagons, and left the Missouri without a single one of the party being competent to guide the little caravan on the dangerous route.
From the Missouri the Trail was broad and plain enough for a child to follow, but when they arrived at the Cimarron crossing of the Arkansas, not a trace of former caravans was visible; nothing but the innumerable buffalo-trails leading from everywhere to the river.
When the party entered the desert, or Dry Route, as it was years afterward always, and very properly, called in certain seasons of drought, the brave but too confident men discovered that the whole region was burnt up. They wandered on for several days, the horrors of death by thirst constantly confronting them. Water must be had or they would all perish! At last Smith, in his desperation, determined to follow one of the numerous buffalo-trails, believing that it would conduct him to water of some character—a lake or pool or even wallow. He left the train alone; asked for no one to accompany him; for he was the very impersonation of courage, one of the most fearless men that ever trapped in the mountains.
He walked on and on for miles, when, on ascending a little divide, he saw a stream in the valley beneath him. It was the Cimarron, and he hurried toward it to quench his intolerable thirst. When he arrived at its bank, to his disappointment it was nothing but a bed of sand; the sometime clear running river was perfectly dry.
Only for a moment was he staggered; he knew the character of many streams in the West; that often their waters run under the ground at a short distance from the surface, and in a moment he was on his knees digging vigorously in the soft sand. Soon the coveted fluid began to filter upwards into the little excavation he had made. He stooped to drink, and in the next second a dozen arrows from an ambushed band of Comanches entered his body. He did not die at once, however; it is related by the Indians themselves that he killed two of their number before death laid him low.
Captain Sublette and Smith's other comrades did not know what had become of him until some Mexican traders told them, having got the report from the very savages who committed the cold-blooded murder.