Tapanti National Park is one of the wettest areas of Costa Rica; one of the most attractive excursions in the park is to the banks of the great Orosi River, where it is possible to swim / © Instituto Costarricense de Turismo
One of the best ways to enjoy the Tortuguero National Park and observe the varied wildlife is to take a kayaking trip / © www.costaricaexpeditions.com
The tropical rain forest, like the other forests of Braulio Carrillo National Park, considered the 'lungs of San Jose', is home to hundreds of species of orchids and ferns / © Instituto Costarricense de Turism
The high rugged mountains, lush forest, two extinct volcanoes, waterfalls, winding rivers and beautiful cloud forest of the Braulio Carrillo National Park, in the splendid Central Valley of Costa Rico, offer an unforgettable experience for nature lovers / © Instituto Costarricense de Turismo
Irazu, which gives its name to a national park, is an active volcano with a long history of eruptions. On clear days, both the Pacific and the Atlantic are visible from the top of the crater / © Instituto Costarricense de Turismo
The aerial tramway (left) through the rainforest in the Central Valley affords a close-up view of the tree canopy; the Manuel Antonio National Park (right) is the smallest of the country's national parks, and is famed for its beaches / © Instituto Costarricense de Turismo – Edgar Menestrel
The impressive white waters of the Sarapiqui River drain from the lake located in the crater of the Poas Volcano / © Errol Barrantes
The crater of the Poas Volcano rises to 2,708 metres and is one of the largest in the world. The many fumaroles located in the inner cone of the crater emit large amounts of gases and steam, and the park is sometimes closed due to sulphuric gas levels / © Instituto Costarricense de Turism
Green is not the only colour in the Costa Rican palette, but not all the Poas Volcano National Park is as grey and bleak as the main crater (left); located on the Pacific coast, about 50 kilometres west of the capital San Jose, the Carara National Park (right) is a popular destination for bird watchers / © Edgar Menestrel – Juan Amighettu
The Tortuguero National Park, in the north east of the country, is very humid and rich in natural habitats including rainforest, swamps and lagoons; it is home to a multitude of animals, including the endangered green sea turtle and almost 400 species of birds / © www.costaricaexpeditions.com
Cahuita National Park, on the Caribbean coast of Costa Rica, is just one of the unspoiled green areas in this country that boasts 40 natural parks and where 25% of the land is protected / © Rodrigo Montenegro