Between them and this edifice there was still another lower one, not unlike an irregular honeycomb.

About forty cells, separated from each other by walls of earth, carried up from the ground to a few inches above the terraced roof, constituted a ground-floor on which rested a group of not more than a dozen similar cells.

The walls of this structure were of stones, irregularly broken and clumsily piled, but they were covered by a thick coating of clay so that nothing of the rough core remained visible.

Instead of doors or entrances, air-holes, round or oval, perforated these walls.
The house appeared empty.

No smoke flitted over the flat roof; the coating was so recent that many places were hardly dry.
[Illustration: (Upper picture) A modern Indian Dance] [Illustration: (Lower picture) An estufa] North of this building, a circular structure thirty feet in diameter rose a few feet only above the soil, like the upper part of a sunken cylinder.