La Gran Sabana (South America)

La Gran Sabana (South America)

Sat, 06/01/2019 - 22:17
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La Gran Sabana is a region in southeastern Venezuela that offers one of the most unusual landscapes in the world, with rivers, waterfalls and gorges, deep and vast valleys, as well as impenetrable jungles and savannas. The region also hosts the isolated tabletop mesas locally known as tepuis.

La Gran Sabana (The Great Savanna) is a region in southeastern Venezuela, part of the Guianan Savanna ecoregion. The savanna spreads into the regions of the Guiana Highlands and southeast into Bolívar State, extending further to the borders with Brazil and Guyana.

La Gran Sabana has an area of 10,820 sq km (4,180 sq mi) and is part of the second largest National Park in Venezuela, the Canaima National Park. Only Parima Tapirapecó National Park is larger than Canaima. The average temperature is around 20 °C (68 °F), but at night can drop to 13 °C (55 °F) and in some of the more elevated sites, depending on weather, may fall a bit more.

The location offers one of the most unusual landscapes in the world, with rivers, waterfalls and gorges, deep and vast valleys, impenetrable jungles and savanna that host large numbers and varieties of plant species, a diverse fauna and the isolated tabletop mesas locally known as tepuis.

This region was subjected to several periods of uplift and subsidence and were subjected to variable erosion. The large remaining isolated sandstone beds are called "tepuis" in the language of the indigenous inhabitants of the region. The road of El Dorado to Santa Elena de Uairén goes from an elevation of 200 to 1,500 m (660 to 4,920 ft) in less than 30 km (19 mi), in a place called "La Escalera" (the stairs). The formation of rocky and sandy soils support a savanna vegetation on the higher elevations with dense jungle vegetation occurs in depressions and dense forests along the rivers.

In the Gran Sabana, there are randomly distributed ancient massifs eroded in tabular form, known as tepuis. These are examples of inverted relief, which form a kind of typical plateau of the Guiana highlands. These plateaus, in the Gran Sabana, reach their maximum altitude in the Tepui Roraima, with nearly 2,800 m (9,200 ft) above sea level.