While examining Sun Dial Palace I noted the “D-shaped construction, also that the south wall of the building ran due east and west.” Also please note the regularity of wall bearings from the approximate center of the elliptical center chamber. I also noted that a shadow cast by the sun apparently coincides with some of these walls at different hours during the day. This last gave suggestion to the name. Also please note that the first tier of rooms around the middle chamber does not show a complete set of bearings but seems to suggest that these regular bearings were obtained from observation and study of a master builder. The result of his study was built as the next circular room tier was added. The two missing rooms on the western side of the building seem to suggest that this building was never completed, and also bear out my theory of an outward building of room tiers from the middle chamber. On the ground this building is fully completed on the south side and forms a due east and west line. An error in mapping the elliptical middle chamber has given the south side an incomplete appearance. I believe that the excavation and study of this ruin will recall something of value, as Father Escalante wrote in his log in 1775. Respectfully submitted. (Signed) J. WARD EMERSON, _Forest Ranger_. [Illustration: FIG. 4.—Schematic ground plan of Emerson Ruin. (After Emerson.)] [32] Also see detailed map of construction of Sun Dial Palace (fig. 4). A personal examination of the remains of this building leads the author to the conclusion that while it belongs to the circular group, with a ground plan resembling Horseshoe House, and while the central part had a wall completely circular, the outer concentric curved walls did not complete their course on the south side, but ended in straight walls comparable with the partitions separating compartments. The author identifies another ruin as that mentioned by the Catholic fathers in 1775. ESCALANTE RUIN The name Escalante Ruin, given to the first ruin recorded by a white man in Colorado, is situated about 3 miles from Dolores on top of a low hill to the right of the Monticello Road, just beyond where it diverges from the road to Cortez. The outline of the pile of stones suggests a D-shaped or semicircular house with a central depression surrounded by rooms separated by radiating partitions. The wall on the south or east sides was probably straight, rendering the form not greatly unlike the other ruins on hilltops in the neighborhood of Dolores. This is supposed to be the ruin to which reference is made in the following quotation from an article in Science:[33]