The Esquinas Rainforest, with a size of 146 square kilometers or 56 square miles, is situated on the Golfo Dulce in the Osa Biological Corridor in Southern Costa Rica. This tropical paradise is one of the last extant lowland rainforests on the Pacific coast of Central America. Its biodiversity is one of the largest on this planet: 3000 species of plants, 320 species of birds and rare animal such as jaguars, ocelots and four species of monkey. The Association Rainforest of the Austrians, founded by Michael Schnitzler in 1991, is dedicated to saving the Esquinas rainforest by buying the land and donating it to the Republic of Costa Rica. Donations of more than 3 million dollars have been used to purchase properties that are then integrated into Piedras Blancas National Park. Aside from land purchase, the Austrian NGO helps protect the forest by hiring guards, and has founded a research station (La Gamba Biological Station) and an ecotourism project (Esquinas Rainforest Lodge). Recently, Rainforest of the Austrians has become actively involved in reforestation with the goal of creating biological corridors between isolated patches of rainforest.