(British), the Compania Sud-America (Chilean), the Kosmos and Roland lines (German), the Merchants line (New York), and a Japanese line from the ports of Japan and China.
This arbitrary retention of Tacna and Arica, which became the province of Tacna under Chilean administration, removed the frontier still farther north, to the river Sama, which separates that province from the remaining part of the Peruvian department of Moquegua.
The Andes, however, present an unbroken barrier on the east, except at a few points in the south where the general elevation is not over 5000 to 6000 ft., and where some of the Chilean rivers, as the Palena and Las Heras, have their sources on its eastern side.
From the 52nd to about the 31st parallel this great mountain system, known locally as the Cordillera de los Andes, apparently consists of a single chain, though in reality it includes short lateral ranges at several points; continuing northward several parallel ranges appear on the Argentine side and one on the Chilean side which are ultimately merged in the great Bolivian plateau.
The Chilean lateral range, which extends from the 29th to the 19th parallels, traverses an elevated desert region and possesses several noteworthy peaks, among which are Cerro Bolson, 16,017 ft., and Cerro Dona Ines, 16,706 ft.