Phone number: 2735-5036.
You can only go to the park with previous reservation made by e-mail to:
To enter by the El Tigre Sector you must book with Asociación Conservacionista Dos Brazos de Río Tigre (ACODOBRARTI) directly at (506) 8323-8695
Comments and Suggestions: 
Osa Chamber of Tourism
Phone number: 2786-6534
Corcovado Chamber of Tourism
Golfo Dulce Chamber of Tourism
Cooperativa de Turismo Comunitario (Community Tourism Cooperative)