Corcovado National Park --- Hike from Carate to Sirena Range Lodge

Corcovado National Park (Spanish: Parque Nacional Corcovado) is a National Park on the Osa Peninsula in Osa Canton, southwestern Costa Rica (9° North, 83° West), which is part of the Osa Conservation Area. It was established on 24 October 1975, and encompasses an area of 424 square kilometres (164 sq mi). It is the largest park in Costa Rica and protects about a third of the Osa Peninsula. It is widely considered the crown jewel in the extensive system of national parks and biological reserves spread across the country. The ecological variety is quite stunning. National Geographic has called it "the most biologically intense place on Earth in terms of biodiversity". Not only is the park very popular with tropical ecologists, a visitor can expect to see an abundance of wildlife.

The park conserves the largest primary forest on the American Pacific coastline and one of the few remaining sizable areas of lowland tropical forests in the world. Historically, logging has taken place in lowland areas because those areas are more easily accessible and contain the largest and most economically valuable trees. But those habitats, which feature diverse vegetation, are also usually the richest in biodiversity. So even though approximately half the tropical forests on Earth remain, what is left of the originally rich lowland forests is usually in too small an area to support the original natural biodiversity. Larger animals, especially, need a large habitat free of human activity. Unfortunately this means that even tourism, the economic incentive for Costa Rica and other developing nations to preserve and protect parks such as Corcovado, actually threatens the long-term biodiversity of the park.