The Peñablanca Protected Landscape and Seascape (formerly known as the Callao Cave National Park) is a protected area and national park in Peñablanca, Cagayan. It is on the border with Isabela province, contiguous with the Northern Sierra Madre Natural Park. The protected area, best known as the location of Callao Cave, covers the largest block of forest under conservation in the province. It covers of the northern Sierra Madre mountain range and its adjacent Pacific coast.