These boulders were, on an average, thirty-five inches long, twenty-five inches thick and fifteen inches wide; while the stones used in the house walls measured, on the average, fourteen by nine by seven inches.
On the western end of the ridge is a small house group, which, for convenience sake, I will designate as "Mason's Ruins." They showed a decidedly higher method of construction, and the walls were better preserved, than in any we had seen so far.

The ground plans could be readily made out, except in a small part of the southwest corner.

These walls stood three to five feet high, and the stones here too were dressed only by fracture.

They were laid in gypsiferous clay, a mass of which lay close to the southwest corner.

This clay is very similar to the material used by the Moquis in whitening their houses.