He waded rivers and climbed mountains.
The largest of the rivers through which Argentina drains into the Plata system are the Pilcomayo, which rises in Bolivia and flows south-east along the Argentine frontier for about 400 m.; the Bermejo, which rises on the northern frontier and flows south-east into the Paraguay; and the Salado del Norte (called Rio del Juramento in its upper course), which rises on the high mountain slopes of western Salta and flows south-east into the Parana.
The ground to the right--along the course of the Kolocha and Moskva rivers--was broken and hilly.
In it there are numberless trees and flowers and rivers and waterfalls, and other things to make the heart glad.
Along the flood-plains of the larger rivers are fertile " bottomlands," but the ruggedness of the plateau country as a whole has retarded the development of the state, much of which is still sparsely populated.
