The Baudó Mountains
(Serranía de Baudó
) are a coastal mountain range
on the Pacific
coast of Colombia
. They are separated from the Cordillera Occidental
by the Atrato valley where the Atrato River
flows and Quibdó
is located. From the south the range extends from the Baudó River north and slightly west along the coast into Panama
terminating at the Golfo de San Miguel. The range is called Serranía del Sapo
when it is in Panama. Technically the landform extends south of the Baudó River down to Bahia de Buenaventura (where Malaga Bay is located), but the area has been eroded into low hills and marshlands.
From Cabo Corrientes north to Punta Ardita and on into Panama the Baudó Mountains meet the ocean in steep cliffs, rising up to as high as 230 feet, with small indentations in the coast providing small pocket beaches, some sandy, but most are shingle or cobble.
However, near river mouths the coast has been eroded and there are wide sandy beaches, tidal flats and even mangrove swamps.
Geologically, the Baudó Mountains represent an extension of the Isthmus of Panama
. They were originally formed in the late Cretaceous
from oceanic volcanics
that were compacted as the Nazca Plate
pushed westward into and under the South American Plate
. The area is still tectonically active with the Nazca plate estimated to move eastward at the rate of 3.7 cm per year.