The Llanos (pronounced YAH-nos) are vast tropical grasslands located in northern South America, primarily in Venezuela and Colombia, between the Andes Mountains to the west and the Guiana Highlands to the east. These plains form part of the Orinoco River basin and are characterized by their flat terrain and unique ecological features.

Key Characteristics of the Llanos:

1. Geography:
   • Spanning over 220,000 square miles (570,000 km²), the Llanos cover a significant portion of the Orinoco River drainage basin.
   • They are bordered by the Andes Mountains to the west and the Orinoco River to the north and east.
2. Climate:
   • The Llanos have a tropical savanna climate with distinct wet and dry seasons.
     • Wet season (May to October): Intense rainfall leads to seasonal flooding, turning the plains into wetlands.
     • Dry season (November to April): The landscape becomes arid and dry, often leading to grass fires.
3. Vegetation and Wildlife:
   • Vegetation consists mainly of grasses, shrubs, and scattered trees, adapting to the seasonal flooding and fires.
   • The Llanos are rich in biodiversity, with species like:
     • Capybaras, giant anteaters, jaguars, and anacondas.
     • Birds such as scarlet ibis, herons, and hawks.
     • Aquatic species like river dolphins, caimans, and various fish during the wet season.
4. Economic Activities:
   • Cattle ranching: The Llanos have long been used for extensive cattle grazing, a practice introduced by Spanish colonists.
   • Oil and Gas: Significant oil reserves are found in parts of the Llanos, particularly in Venezuela.
   • Tourism: The unique ecosystem attracts ecotourists and wildlife enthusiasts.
5. Cultural Significance:
   • The Llanos are integral to the Llanero culture (the people of the Llanos), known for their traditional music, cowboy lifestyle, and festivals.

Ecological Importance:

The Llanos play a crucial role in maintaining the ecological balance of the Orinoco River basin. Seasonal flooding supports the life cycle of many aquatic and terrestrial species, making it a key habitat for wildlife.

The Llanos are tropical grasslands rich in biodiversity and cultural history, serving as a vital ecological region and a significant economic area for Venezuela and Colombia.