The deep and narrow Andean valleys are very different from the wide depressions of Aragua and Carabobo, in the Cordillera de la Costa, or from the valleys nestled in the Mesas de Monagas. These examples indicate that the configuration of the local relief is decisive in identifying regional types of valleys. Likewise, due to their warm climate, the Guayana valleys are distinguished from the temperate or cold Andean valleys by their humid environment. Both are, in turn, different from the semi-arid depressions of the states of Lara and Falcón.