...entirely of igneous rocks. This zone extends at places to the Atlantic and Pacific shores. It includes the Cordillera de Guanacaste, the Cordillera Central, and the Cordillera de Talamanca, with their numerous offshoots. The Cordillera de Guanacaste and the Cordillera Central consist of a...

...lowland of Nicaragua to the border of Colombia runs from northwest to southeast in three segments — the Cordillera de Guanacaste; the Cordillera Central; and the Cordillera de Talamanca. Northeast of the west coast port of Puntarenas the Cordillera Central turns east to form the northern...