“We see that it is arranged very nearly at right angles to the river, its greatest depth on the left, where it runs back one hundred and twenty feet; the front sweeps back in a diagonal line, so that the right-hand side is only thirty-two feet in depth. The back wall is one hundred and fifty-eight feet long, and at right angles to the two sides. In the centre of the building, looking out upon the river, is an open space seventy-five feet wide, and averaging forty feet in depth, its depressed centre divided nearly equally by a ridge running through it at right angles to the river. We judged it to have been an open court, because there was not the least vestige of a wall in front, or on the ridge through the centre, while upon the other three sides they were perfectly distinct; although it is difficult to explain why it should have been hollowed out in the manner shown in the plan. Back of this court is a series of seven apartments of equal size, springing in a perfect arch from the heavy wall facing the court, leaving a semicircular space in the centre, forty-five feet across its greatest diameter. Each one is fifteen feet in length, and the same in width across its centre, the walls somewhat irregular in thickness, but averaging twenty inches, compact, and well laid. On the left are three rooms extending across the whole width of the building, each averaging forty-five by forty feet square; on the right only one was discernible. Back of the circle, our impression was that the walls diverged in the manner shown in the plan, although there is so much confusion resulting from the heaping up of the débris that much must be left to conjecture. There is also a slight shadow of doubt in regard to the wall facing the river on the right; it is barely possible that it extended somewhat farther out, although there is here a steep inclination to the brink of the bluff, and that it has become entirely obliterated by its foundations giving way. The remains of the wall above, however, led us to believe that it had been originally built in the way it is shown in the plan. Extreme massiveness is indicated throughout the whole structure by the amount of débris about the line of the walls, forming long rounded mounds four to five feet high, with the stone-work cropping out, twenty to twenty-four inches in thickness.” [Illustration: RUINS UPON THE RIO SAN JUAN] [Illustration: Rock-Shelters of the San Juan Cañon.] In the face of the bluff immediately under this ruin and upon a recessed bench three hundred feet long was a row of little rock-shelters, with just enough room on the ledge in front of them to admit of a promenade the entire length of the shelf. All down the valley of the San Juan, rock shelters and dwellings similar to the group shown in the cut, were met with.