Ruin A (pl. 21, _a_), the largest building of the group, which stands
on the edge of the canyon, is rectangular in form, measuring 31 by
9 feet, and is 20 feet high (fig. 11, _A_). Evidences of two rooms
appear on the ground plan, one of which is 14 feet long, the other 12
feet inside measurement. The partition separating the two rooms is
not tied into the outer walls, an almost constant feature in ancient
masonry. The ends of the rafters are still seen in the wall at a level
12 feet above the base. Fallen stones have accumulated in the rooms to
a considerable depth, and the tops of the remaining wall, where the
mortar is washed out, will tumble in a short time.
Ruin B (pl. 20, _b_), situated a short distance north of Ruin A, also
stands on the canyon rim. The north wall is entire, but the south wall
has fallen. What remains indicates that the ruin was about square, with
corners on the north side rounded, imparting to it a semicircular form.
The entrance into this room may have been through the floor.