Personal Narrative Of Travels To The Equinoctial Regions Of America During The Years 1799-1804 - Volume 3 - By Alexander Von Humboldt And Aime Bonpland.
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The
Interior Of Darfur Is Not More Unknown To Geographers Than The Humid,
Insalubrious Forest-Land Which Extends On The North-West Of Betoi And
The Confluence Of The Bevara With The Atrato, Towards The Isthmus Of
Panama.
All that we positively know of it hitherto is that between
Cupica and the left bank of the Atrato there is either a land-strait,
or a total absence of the Cordillera.
The mountains of the isthmus of
Panama, by their direction and their geographical position, may be
considered as a continuation of the mountains of Antioquia and Choco;
but on the west of Bas-Atrato, there is scarcely a ridge in the plain.
We do not find in this country a group of interposed mountains like
that which links (between Barquisimeto, Nirgua and Valencia) the
eastern chain of New Grenada (that of Suma Paz and the Sierra Nevada
de Merida) to the Cordillera of the shore of Venezuela.
The Cordillera of the Andes, considered in its whole extent, from the
rocky wall of the island of Diego Ramirez to the isthmus of Panama, is
sometimes ramified into chains more or less parallel, and sometimes
articulated by immense knots of mountains. We distinguish nine of
those knots, and consequently an equal number of branching-points and
ramifications. The latter are generally bifurcations. The Andes are
twice only divided into three chains; in the knot of Huanuco, near the
source of the Amazon, and the Huallaga (latitude 10 to 11 degrees) and
in the knot of the Paramo de las Papas (latitude 2 degrees), near the
source of the Magdalena and the Cauca.
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