No attempt was made to get the exact dimensions of the component houses at Aztec Spring, as the walls are now concealed in the mounds, and measurements can only be approximations if obtained from surface indications without excavation. The sketch plan here introduced (fig. 1) is schematic, but although not claimed as accurate, may serve to convey a better idea of the relation of the two great structures and their annexed buildings than any previously advanced. The author saw no ruined prehistoric village in the Montezuma Valley that so stirred his enthusiasm to properly excavate and repair as that at Aztec Spring,[27] notwithstanding it has been considerably dug over for commercial purposes. [27] Mr. Van Kleeck, of Denver, has offered this ruin to the Public Parks Service for permanent preservation. It is proposed to rename it the Yucca House National Monument. GREAT OPEN-AIR RUINS SOUTH AND SOUTHWEST OF DOVE CREEK POST OFFICE In the region south and southwest of Dove Creek there are several large pueblo ruins, indicated by mounds formed of trimmed stone, eolean sand, and clay from plastering, which have certain characters in common. Each mound is a large heap of stones (pl. 3, _a_) near which is a depression or reservoir, with smaller heaps which in different ruins show the small buildings of the unit type. These clusters or villages are somewhat modified in form by the configuration of the mesa surface. The larger have rectangular forms regularly disposed in blocks with passageways between them or are without any definite arrangement. SQUAW POINT RUIN This large ruin, which has been described by Doctor Prudden as Squaw Point Ruin and as Pierson Lake Ruin, was visited by the author, who has little to add to this description. One of the small heaps of stone or mounds has been excavated and its structure found to conform with the definition of the unit type. The subterranean communication between one of the rectangular rooms and the kiva could be well seen at the time of the author’s visit and recalls the feature pointed out by him in some of the kivas of Spruce-tree House. The large reservoir and the great ruin are noteworthy features of the Squaw Point settlement. It seems to the author that the large block of buildings is simply a congeries of unit types the structure of one of which is indicated by the small buildings excavated by Doctor Prudden, and that structurally there is the same condition in it as in the pueblo ruins of Montezuma Valley, a conclusion to which the several artifacts mentioned and figured by Doctor Prudden also point.