Towards the southern end of the Llano Estacado the surface exhibits a very singular phenomenon—a belt of sand-hills, nearly twenty miles in breadth and full fifty in length, stretching north and south upon the plain. These hills are of pure white sand, thrown up in ridges, and sometimes in cones, to the height of a hundred feet, and without tree, bush, or shrub, to break their soft outlines, or the uniformity of their colour. But the greatest anomaly of this geological puzzle is, that water-ponds are found in their very midst—even among their highest ridges—and this water not occasional, as from rains, but lying in “lagunas,” with reeds, rushes, and nymphae growing in them, to attest that the water is permanent! The very last place where water might be expected to make a lodgment.
Such formations of drift-sand are common upon the shores of the Mexican Gulf, as well as on European coasts, and there their existence is easily explained; but here, in the very heart of a continent, it cannot be regarded as less than a singular phenomenon.
This sand-belt is passable at one or two points, but horses sink to the knees at every step, and but for the water it would be a perilous experiment to cross it.
Where is the Llano Estacado? Unroll your map of North America. You will perceive a large river called the Canadian rising in the Rocky Mountains, and running, first southerly, and then east, until it becomes part of the Arkansas. As this river bends eastwardly, it brushes the northern end of the Llano Estacado, whose bluffs sometimes approach close to its banks, and at other times are seen far off, resembling a range of mountains—for which they have been frequently mistaken by travellers.
The boundary of the west side of the “Staked Plain” is more definite. Near the head-waters of the Canadian another large river has its source. This the Pecos. Its course, you will observe, is nearly south, but your map is not correct, as for several hundred miles the Pecos runs within a few degrees of east. It afterwards takes a southerly direction, before it reaches its embouchure in the Rio Grande. Now the Pecos washes the whole western base of the Llano Estacado; and it is this very plain, elevated as it is, that turns the Pecos into its southerly course, instead of leaving it to flow eastward, like all the other prairie-streams that head in the Rocky Mountains.
The eastern boundary of the Llano Estacado is not so definitely marked, but a line of some three hundred miles from the Pecos, and cutting the head-waters of the Wichita, the Louisiana Bed, the Brazos, and Colorado, will give some idea of its outline. These rivers, and their numerous tributaries, all head in the eastern “ceja” (brow) of the Staked Plain, which is cut and channelled by their streams into tracts of the most rugged and fantastic forms.
At the south the Llano Estacado tapers to a point, declining into the mezquite plains and valleys of numerous small streams that debouch into the Lower Rio Grande.
This singular tract is without one fixed dweller; even the Indian never makes abode upon it beyond the few hours necessary to rest from his journey, and there are parts where he—inured as he is to hunger and thirst—dare not venture to cross it. So perilous is the “Jornada,” or crossing of the Llano Estacado, that throughout all its length of four hundred miles there are only two places where travellers can effect it in safety! The danger springs from the want of water, for there are spots of grass in abundance; but even on the well-known routes there are, at certain seasons, stretches of sixty and eighty miles where not a drop of water is to be procured!
In earlier times one of these routes was known as the “Spanish Trail,” from Santa Fé to San Antonio de Bexar, of Texas; and lest travellers should lose their way, several points were marked with “palos,” or stakes. Hence the name it has received.
The Llano Estacado is now rarely travelled, except by the ciboleros, or Mexican buffalo-hunters, and “Comancheros,” or Indian traders. Parties of these cross it from the settlements of New Mexico, for the purpose of hunting the buffalo, and trafficking with the Indian tribes that roam over the plains to the east. Neither the hunt nor the traffic is of any great importance, but it satisfies a singular race of men, whom chance or inclination has led to the adopting it as a means of subsistence.