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Volcanoes of Costa Rica
Arenal Volcano
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Rincon de la Vieja Volcano
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Poás Volcano
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Irazú Volcano
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Turrialba Volcano
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The Arenal Volcano is one of the most active volcanoes in this hemisphere. You will experience a most impressive view of the power and energy a volcano delivers. The sense of the ground trembling under your feet – and at night seeing the ash and lava cascading – will be a natural type of fireworks you are not soon to forget. Arenal Volcano rises 1,633 meters above sea level and casts an ominous silhouette on the land below. This volcano is far from dormant and its constant rumblings at night are Arenal's most popular characteristics. 
Costa Rica has six active volcanoes. One of these, found in the Northwestern corner of the country, is the Rincon de la Vieja (the niche where the Old One lives) Volcano, which is located within Rincon de la Vieja National Park. Dry and cloud forest habitats prevail in the area. The park is well organized, having a very interesting trail system taking you thru smoking fumaroles and hot mud pools. You can walk right through the volcanic activity. Hot mineral springs and mud therapy are common in this region. The forest itself is a great place to bird watch and observe mammals like the anteater, raccoons, deer and more.
Poás Volcano experiences eruptions similar to those of a geyser, which consist of columns of muddy water together with steam that rise from a few to several kilometers. These eruptions have made Poás famous as the biggest geyser in the world. The main crater is enormous, almost 2 km in diameter and 300 m deep. At the bottom of this crater there is a thermo-mineral lagoon some 350 m across. Just getting to Poás Volcano you’ll traverse a beautiful path of coffee plantations and flower farms that adorn the side of the road and the views are breathtaking as you start climbing around the volcano. 
Irazú, at 3,432 m high, it is the highest volcano in the country, and has a long history of eruptions and eruption cycles. Irazú is another option for viewing an impressive live volcano in Costa Rica. You can see both the Caribbean and Pacific Ocean on a clear day from this volcano. There are three main craters here. The main one is almost circular, 1,050 m in diameter and 250 to 300 m deep. At its base there is a lagoon with greenish colored water. Another crater is called Diego de la Haya which is circular, 690 m in diameter and 80 m deep. The landscape that surrounds the volcano is like a science-fiction movie set; the past eruptions and the acid rain combined with powerful winds have caused the land around the craters to look hostile and gray.
Turrialba Volcano is the latest in the Central Volcanic Mountain Range in the north-east, 25 km from Cartago, and is similar to Irazú; you could say that these two volcanoes are almost identical twins. Turrialba Volcano is composed of 3 craters , each with small vents, referred to as the main, central and east craters. In the foothills of Turrialba Volcano is the National Monument of Guayabo, which is the most significant archaeological discovery of the country: pre-Columbian ruins located in the middle of a rainforest.Interesting facts:
- Costa Rica is one of 20 countries in the world with the most biodiversity.
- Costa Rica has more than 500 000 species of flora and Fauna.
- Costa Rica has 860 bird species in its sky.
- Costa Rica has more butterflies that all Europe.
- Costa Rica has one of the biggest volcanic craters of the world (Volcán Poás).
