Cerro Sarisariñama

This is a flat mountain. It is in Venezuela. It sits near Brazil.

The top of the mountain is green. It has many trees. This helps many plants and animals live there.

There are big holes in the top. These holes are called sinkholes. They are very deep.

Forests grow at the bottom of the holes. These places are very special.

It is hard to get to the mountain. Only scientists go there now.

Cerro Sarisariñama is a special mountain in Venezuela. It is a tepui. A tepui is a mountain with a flat top. This mountain sits in Bolívar State. It is near the border with Brazil. It is in a very remote area. The closest road is 35 miles away.

The top of the mountain is covered in forest. This is different from other tepuis. Many plants and animals live there. They are endemic. This means they live in no other place.

The most famous parts are the sinkholes. These are huge holes in the ground. There are four known sinkholes. Two are named Sima Humboldt and Sima Martel. Sima Humboldt is the largest. It is very wide and deep. Small forests grow at the bottom of these holes.

People first saw the holes from planes in 1954. A pilot named Harry Gibson saw them in 1961. In 1974, a helicopter took researchers to the top. In 1976, a team found a third sinkhole. It is called Sima de la Lluvia. It helped scientists learn how these holes form. Now, only researchers can visit this place.

Cerro Sarisariñama is a very special mountain in Venezuela. It is a tepui, which is a mountain with a flat top. This mountain sits in Bolívar State near the border with Brazil. It is part of the Jaua-Sarisariñama National Park. The mountain is in a very remote part of the country. The closest road is 35 miles away to the northeast.

The mountain is made of quartzite rock. This rock belongs to the Roraima formation. It comes from the Paleoproterozoan era. The summit area is 10 square kilometers. The slope area is 15 square kilometers. Unlike many other tepuis, a forest covers the top. This forest creates a unique home for life. Many plants and animals live here that live nowhere else.

The most famous parts of the mountain are its sinkholes. These are huge holes in the ground. There are four known sinkholes on this tepui. Two are named Sima Humboldt and Sima Martel. They look very unusual to see. Sima Humboldt is the largest sinkhole. It is up to 350 meters wide and 350 meters deep. Small forests grow at the bottom of these holes.

People first heard about the sinkholes in 1954. Pilots saw them while flying over the mountain. In 1961, a pilot named Harry Gibson noticed the big holes. Scientists finally reached the top in 1974. They used a helicopter to carry thirty researchers there. In 1976, a team from Venezuela and Poland visited. They found a third sinkhole called Sima de la Lluvia.

Exploring the sinkholes helped scientists learn many things. For a long time, one sinkhole was a very long cave. It was 1.35 kilometers long. This was the longest quartzite cave in the world for twenty years. Scientists used it to study how sinkholes form. Another mountain, Mount Roraima, also has a very long quartzite cave. Today, only scientific researchers are allowed to visit Sarisariñama.

Cerro Sarisariñama is a remarkable tepui located in Venezuela. A tepui is a mountain characterized by a flat top. This specific mountain sits within the Jaua-Sarisariñama National Park. It is located in the far southwest of Bolívar State. The site is positioned near the border with Brazil. It is one of the most remote areas in the country. The nearest road is 35 miles away to the northeast.

The geology of the mountain is quite ancient. Sarisariñama is composed of quartzite from the Roraima formation. This formation belongs to the Paleoproterozoan era. The mountain features a summit area of 10 square kilometers. Its slope area covers 15 square kilometers. Unlike many other tepuis, the top of Sarisariñama is fully covered by a forest. This creates an isolated ecosystem on the plateau. This isolation allows for many endemic species to thrive. Endemic species are plants and animals found nowhere else on Earth.

The most distinctive features of this tepui are its sinkholes. A sinkhole is a large hole in the ground. There are four known sinkholes on Cerro Sarisariñama. Two of these are named Sima Humboldt and Sima Martel. These two are visually unusual and very large. They are well known for having isolated forest ecosystems at their bottoms. Sima Humboldt is the largest of these holes. It can be up to 350 meters wide and 350 meters deep.

Reports of these sinkholes first circulated in 1954. This happened after pilots began flying over the tepui. The mountain became a major destination for exploration after 1961. This change occurred after a pilot named Harry Gibson noticed the enormous sinkholes. Scientists worked hard to reach this remote location. In 1974, researchers finally reached the summit of the mountain. They used a helicopter to airlift thirty researchers to the top.

Detailed scientific study of the mountain followed these early trips. Initial investigations focused on both of the major sinkholes. Some researchers even performed a descent to the bottom of Sima Humboldt. In 1976, a joint expedition from Venezuela and Poland arrived. They conducted a thorough speleological investigation of the area. Speleology is the scientific study of caves. During this expedition, they discovered a third sinkhole. This new sinkhole is named Sima de la Lluvia.

The discovery of Sima de la Lluvia was very important. It helped scientists explore the processes of erosion on tepuis. Erosion is the process where earth is worn away by natural forces. For about two decades, one sinkhole was a world record holder. It was the longest known quartzite cave in the world. That cave measured 1.35 kilometers in length. Another mountain, Mount Roraima, also has a very long quartzite cave. That cave measures 1.1 kilometers in length.

The name of the mountain has a deep cultural history. It comes from the tales of the local Ye'kuana people. They spoke of an evil spirit living in the mountain caves. This spirit was said to devour human flesh. The name comes from the sound "Sari... sari..." made by the spirit. Today, the mountain is a place of strict protection. Access is currently restricted to scientific researchers only. This helps preserve the unique life found on the plateau and in the sinkholes.