[2] Mount Porras at 800 feet (240 m) is the highest peak in the area and is located at the park's center.

[6] The park serves as a corridor between two important bird areas on the island, the Northwest Panay Peninsula Natural Park and the Central Panay Mountain Range.

[5] It supports 76 bird species, 28 of which are endemic to the Philippines including the Negros bleeding-heart, Walden's hornbill, Visayan hornbill, brahminy kite, blue-naped parrot, white-winged cuckooshrike and eastern grass owl.

[2] One of the main highlights is the large flower Rafflesia speciosa, discovered in Mount Porras and surrounding barangays in 2002[6] The Philippine dipterocarp trees such as white lauan and apitong, and fruit trees such as antipolo and malapaho are found in the forests of Sibalom.

The globally endangered giant flower, the Rafflesia speciosa, also blooms in the park.