Small square rooms were there huddled together in separate groups: some of the doorways were yet standing; they were formed by a cross slab of stone only about three feet high.

Ulloa has remarked on the lowness of the doors in the ancient Peruvian dwellings.

These houses, when perfect, must have been capable of containing a considerable number of persons.

Tradition says that they were used as halting-places for the Incas, when they crossed the mountains.

Traces of Indian habitations have been discovered in many other parts, where it does not appear probable that they were used as mere resting-places, but yet where the land is as utterly unfit for any kind of cultivation as it is near the Tambillos or at the Incas Bridge, or in the Portillo Pass, at all which places I saw ruins.