The park protects some of the largest remaining specimens of Peroba-rosa (Aspidosperma polyneuron) in the state of São Paulo.
It is one of the few remaining wild strongholds for the Leontopithecus chrysopygus, or black lion tamarin.
The park's name originated from a local legend regarding a rocky outcrop that sailors on the Paranapanema River claimed was cursed.
The sanctuary is part of a larger ecological corridor project intended to reconnect fragmented Atlantic Forest patches in Western São Paulo.
The park was established in 1941 to preserve the unique flora and fauna of the interior Atlantic Forest biome.
Morro do Diabo State Park is a 33,845-hectare protected area in the Pontal do Paranapanema region of São Paulo, representing one of the last major fragments of the Atlantic Forest in the interior of the state. It is internationally recognized as a critical sanctuary for the black lion tamarin, an endangered primate species endemic to this region. The terrain features a mosaic of semi-deciduous seasonal forest, hosting a high density of peroba-rosa trees. The park’s infrastructure includes a visitors' center, educational exhibits, and marked trails that provide access to the park's diverse ecosystem. Conservation efforts here focus on the reforestation of corridors to connect isolated forest patches. Researchers frequently utilize the area to study the intersection of agricultural expansion and biodiversity preservation. It serves as a vital genetic reservoir for species that have lost habitat throughout the Paraná River basin.
The observation deck overlooking the forest canopy, which offers a panoramic view of the preserved Atlantic Forest landscape.
Contact the park management office in advance to confirm trail availability, as certain zones may be restricted for research.
Bring high-quality insect repellent and long-sleeved clothing, as the humid forest environment is prone to ticks and mosquitoes.
Hire a local guide to increase the likelihood of spotting the black lion tamarin and to navigate the dense forest trails safely.
Do not attempt to hike remote or unmarked trails without an official guide, as the forest interior is dense and easy to lose orientation.
Closed on Mondays for management and maintenance.
Wear sturdy, closed-toe hiking boots; stay strictly on marked paths to avoid disturbing the habitat; do not feed or approach wild animals.
