Callao Cave (IPA: [ΛkalaΚ]) is one of 300 limestone caves located in the Barangays of Magdalo and Quibal in the municipality of PeΓ±ablanca, about 24 km (15 mi) northeast of Tuguegarao City, the capital of Cagayan province within the PeΓ±ablanca Protected Landscape and Seascape in the western foothills of the Northern Sierra Madre Mountains on Luzon island in the Philippines. The town PeΓ±ablanca's (Spanish: white rocks) name refers to the predominance of white limestone rock formations in the area. First excavated in 1980 by Maharlika Cuevas, the seven-chamber show cave is the best known natural tourist attraction of the Cagayan province and in February 2020 has officially been recognized as an important cultural property of the Philippines.