Piedras Blancas National Park is a national park part of the Osa Conservation Area. It is found in the Puntarenas Province of southern Costa Rica near the town of La Gamba. It protects rainforests and beaches near the Golfo Dulce on the Pacific Coast. It used to operate as part of the Corcovado National Park called the "Esquinas Sector" from 1991 before becoming a separate park in 1999. Until the mid-1990s, much of the forest in the park was severely endangered by logging.