It appears as if the stream had scooped out a channel on one side, leaving an overhanging ledge, which was met by earth and stones falling down from the opposite cliff.

Certainly an oblique junction, as would happen in such a case, was very distinct on one side.

The Bridge of the Incas is by no means worthy of the great monarchs whose name it bears.
APRIL 5, 1835.
We had a long day's ride across the central ridge, from the Incas Bridge to the Ojos del Agua, which are situated near the lowest casucha on the Chilian side.

These casuchas are round little towers, with steps outside to reach the floor, which is raised some feet above the ground on account of the snow-drifts.

They are eight in number, and under the Spanish government were kept during the winter well stored with food and charcoal, and each courier had a master-key.