Philippines, My Philippines - Callao Caves. Barangay Parabba and Quibal, Peñablanca, Tuguegarao, Cagayan. The Callao Cave is perhaps one of the most popular caves in the Philippines (even more popular than the
Callao Cave System, one of the largest cave systems in the Philippines is here at Cagayan : Schadow1 Expeditions | A travel and mapping resource for the Philippines
![2 The locations of the Callao Cave excavation units. Source: A. Mijares. | Download Scientific Diagram 2 The locations of the Callao Cave excavation units. Source: A. Mijares. | Download Scientific Diagram](https://www.researchgate.net/publication/315613225/figure/fig2/AS:475481737830404@1490375088808/The-locations-of-the-Callao-Cave-excavation-units-Source-A-Mijares.png)
2 The locations of the Callao Cave excavation units. Source: A. Mijares. | Download Scientific Diagram
![Callao Cave is one of the limestone caves located in the Municipality of Peñablanca, Cagayan province, in the Philippines… | Tourist attraction, Tourist, Ecotourism Callao Cave is one of the limestone caves located in the Municipality of Peñablanca, Cagayan province, in the Philippines… | Tourist attraction, Tourist, Ecotourism](https://i.pinimg.com/originals/ed/53/fe/ed53fe4c61ad3dcc7dd836fc6848c319.jpg)
Callao Cave is one of the limestone caves located in the Municipality of Peñablanca, Cagayan province, in the Philippines… | Tourist attraction, Tourist, Ecotourism
![Soft Reopening of Callao Cave Marks a New Beginning for Penablanca, Cagayan – Cagayan Valley and Northern Philippine Islands Soft Reopening of Callao Cave Marks a New Beginning for Penablanca, Cagayan – Cagayan Valley and Northern Philippine Islands](http://www.region2fun.ph/wp-content/uploads/2023/10/Callaso2.jpg)