Rajah Sikatuna

Rajah Sikatuna Protected Landscape encompasses approximately 10,452 hectares of diverse habitats in the interior of Bohol Island in the Central Visayas, named after the Boholano chieftain who made a blood compact with Spanish explorer Miguel Lopez de Legazpi in 1565. The protected area includes remnant forests, man-made mahogany plantations, and the unique limestone terrain that has produced some of Bohol's most distinctive geological features. The park serves as an important biodiversity refuge on an island where much of the original forest has been lost to agriculture and logging. It connects ecologically to the famous Chocolate Hills and the surrounding natural areas that make Bohol one of the most popular nature tourism destinations in the Philippines.

The protected landscape is home to the Philippine tarsier, one of the world's smallest primates, which inhabits the dense vegetation near rivers and in secondary forest where it feeds on insects at night. Over 100 bird species have been recorded, including the critically endangered Visayan hornbill and the Philippine hawk-eagle that nests in the taller forest remnants. The Bohol flying lemur, Philippine civet, and various bat species represent the mammal fauna of the forest areas. Freshwater streams support native fish, crabs, and frogs, while the forest floor hosts diverse communities of insects, spiders, and other invertebrates.

Native forest remnants include patches of lowland tropical forest with Molave, narra, and other hardwood species, though much of the original cover has been replaced by mahogany (Swietenia macrophylla) plantations. The mahogany forest, while not native, provides canopy cover and wildlife habitat, creating the famous Mahogany Man-Made Forest along the road between Loboc and Bilar that has become a major tourist attraction. Limestone karst areas support specialized vegetation adapted to the alkaline, drought-prone substrate, including endemic herbs, shrubs, and orchids. The riparian vegetation along streams within the park includes native species that maintain bank stability and shade the waterways, supporting aquatic ecosystem health.

The park features extensive limestone karst terrain, part of the same geological formation that produced the famous Chocolate Hills, with solution caves, sinkholes, and tower karst creating a complex subterranean and surface landscape. The limestone dates from the Miocene to Pliocene periods, formed from coral reef and marine sediment deposits that were uplifted by tectonic activity and subsequently dissolved by rainwater into the characteristic karst features. Cave systems within the park host significant speleothem formations including stalactites, stalagmites, and flowstone that have developed over millions of years. The geological diversity includes both limestone and volcanic-derived formations, creating varied soil types and terrain that support the park's biological diversity.

Bohol experiences a tropical maritime climate with relatively evenly distributed rainfall averaging approximately 1,800 to 2,200 millimeters annually. Temperatures are warm year-round, ranging from 24 to 33 degrees Celsius, with minimal seasonal variation. The dry season from March to May and the wet season from June to January are less pronounced than in other parts of the Philippines, though typhoons can bring extreme rainfall events during the wet season. The devastating Typhoon Haiyan in 2013 and the 7.2-magnitude earthquake that struck Bohol the same year highlighted the natural hazard risks facing the island's ecosystems and communities.

Rajah Sikatuna, for whom the park is named, was a Boholano chieftain who entered into a blood compact (sandugo) with Spanish conquistador Miguel Lopez de Legazpi in 1565, one of the most famous events in Philippine colonial history. The interior of Bohol was gradually settled during the Spanish and American colonial periods, with the forests cleared for agriculture and the establishment of settlements. During the Philippine-American War, Boholano resistance fighters used the forested interior as a base for guerrilla operations against American forces. The mahogany forest was planted in the mid-20th century as part of a reforestation program to rehabilitate degraded land, inadvertently creating what would become one of the island's most famous tourist sites.

The area was designated as a Protected Landscape under the NIPAS Act, recognizing its importance for biodiversity conservation, particularly as habitat for the Philippine tarsier, and its geological and historical significance. The park establishment followed the recognition that Bohol's remaining natural habitats needed formal protection to prevent further loss to agricultural expansion and development. Conservation management has included tarsier habitat protection, cave conservation, and the management of the mahogany forest area as a combined conservation and tourism zone. The Bohol earthquake of 2013 damaged some park infrastructure and altered cave formations, requiring rehabilitation and reassessment of geological stability in affected areas.

The Mahogany Man-Made Forest, a dramatic two-kilometer stretch of road lined by towering mahogany trees creating a cathedral-like canopy, is the most visited feature and an iconic Bohol photograph location. The Philippine Tarsier Sanctuary within the park allows visitors to observe these tiny primates in a controlled, habitat-friendly setting that minimizes disturbance. Caves within the park offer spelunking experiences, with guided tours revealing impressive limestone formations and the opportunity to learn about cave ecology. Nature trails through the remaining native forest areas provide birdwatching and wildlife observation opportunities away from the more heavily visited tourist sites.

The park is easily accessible from Tagbilaran City, the capital of Bohol, in approximately one to two hours by road, and is typically included in the standard Bohol countryside tour that most visitors to the island undertake. Well-organized visitor facilities at the Tarsier Sanctuary include boardwalks, interpretation centers, and trained guides who help visitors observe tarsiers without disturbing them. The Mahogany Forest has roadside parking, viewing areas, and vendors selling local products. Tagbilaran has an airport with domestic flights from Manila and Cebu, and is also connected to Cebu City by regular fast ferry services.

Tarsier conservation programs enforce strict viewing protocols, including whisper-only policies and no-flash photography, to protect these stress-sensitive nocturnal primates from tourism impacts. Native forest restoration programs aim to gradually replace portions of the non-native mahogany plantations with indigenous tree species that provide better habitat for endemic wildlife. Cave conservation measures restrict access to sensitive formations and manage visitor numbers to prevent damage to speleothems and disturbance of bat colonies. Sustainable tourism management ensures that the economic benefits of the park's popularity support conservation activities and benefit local communities who serve as stewards of the protected landscape.